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231001203030 = 235131141151907
BaseRepresentation
bin1101011100100010111…
…1101010000101010110
3211002020212111222020020
43113020233222011112
512241042301444110
6254042005250010
722455265554063
oct3271057520526
9732225458206
10231001203030
1189a7017a954
1238929a03906
1318a24c52bb0
14b2754abc6a
15601ee1ad70
hex35c8bea156

231001203030 has 64 divisors (see below), whose sum is σ = 597113088768. Its totient is φ = 56855756160.

The previous prime is 231001203023. The next prime is 231001203049. The reversal of 231001203030 is 30302100132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4424337 + ... + 4476243.

It is an arithmetic number, because the mean of its divisors is an integer number (9329892012).

Almost surely, 2231001203030 is an apocalyptic number.

231001203030 is an abundant number, since it is smaller than the sum of its proper divisors (366111885738).

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

231001203030 is a wasteful number, since it uses less digits than its factorization.

231001203030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63341.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 231001203030 its reverse (30302100132), we get a palindrome (261303303162).

The spelling of 231001203030 in words is "two hundred thirty-one billion, one million, two hundred three thousand, thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 11411 22822 34233 51907 57055 68466 103814 114110 148343 155721 171165 259535 296686 311442 342330 445029 519070 674791 741715 778605 890058 1349582 1483430 1557210 2024373 2225145 3373955 4048746 4450290 6747910 10121865 20243730 592310777 1184621554 1776932331 2961553885 3553864662 5923107770 7700040101 8884661655 15400080202 17769323310 23100120303 38500200505 46200240606 77000401010 115500601515 231001203030