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13123310031230 = 2572333146495297
BaseRepresentation
bin1011111011111000001000…
…1110111001000101111110
31201110120120001002011000012
42332332002032321011332
53210003014331444410
643524433154303222
72523061566515540
oct276760216710576
951416501064005
1013123310031230
1141aa623430313
12157b475b87b12
137426a4857939
14335258bd9690
1517b57a022605
hexbef823b917e

13123310031230 has 128 divisors (see below), whose sum is σ = 28266805094400. Its totient is φ = 4289058385920.

The previous prime is 13123310031199. The next prime is 13123310031257. The reversal of 13123310031230 is 3213001332131.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 13123310031196 and 13123310031205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2477495942 + ... + 2477501238.

It is an arithmetic number, because the mean of its divisors is an integer number (220834414800).

Almost surely, 213123310031230 is an apocalyptic number.

13123310031230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13123310031230 is an abundant number, since it is smaller than the sum of its proper divisors (15143495063170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13123310031230 is a wasteful number, since it uses less digits than its factorization.

13123310031230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10314.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 13123310031230 its reverse (3213001332131), we get a palindrome (16336311363361).

The spelling of 13123310031230 in words is "thirteen trillion, one hundred twenty-three billion, three hundred ten million, thirty-one thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 23 35 46 70 115 161 230 322 331 662 805 1610 1655 2317 3310 4634 4649 5297 7613 9298 10594 11585 15226 23170 23245 26485 32543 37079 38065 46490 52970 53291 65086 74158 76130 106582 106927 121831 162715 185395 213854 243662 266455 325430 370790 532910 534635 609155 748489 852817 1069270 1218310 1496978 1538819 1705634 1753307 3077638 3506614 3742445 4264085 7484890 7694095 8528170 8766535 10771733 12273149 15388190 17533070 21543466 24546298 24625753 35392837 40326061 49251506 53858665 61365745 70785674 80652122 107717330 122731490 123128765 172380271 176964185 201630305 246257530 247749859 282282427 344760542 353928370 403260610 495499718 564564854 566392319 861901355 1132784638 1238749295 1411412135 1723802710 2477498590 2822824270 2831961595 3964746233 5663923190 7929492466 8151124243 16302248486 19823731165 39647462330 40755621215 57057869701 81511242430 114115739402 187475857589 285289348505 374951715178 570578697010 937379287945 1312331003123 1874758575890 2624662006246 6561655015615 13123310031230