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12023131302 = 23271353138493
BaseRepresentation
bin10110011001010001…
…00110110010100110
31011000220122100112100
423030220212302212
5144110410200202
65305013232530
7603641633640
oct131450466246
934026570470
1012023131302
11510a820556
1223b6632746
131197ba32a0
14820b1d890
154a57de41c
hex2cca26ca6

12023131302 has 96 divisors (see below), whose sum is σ = 32666856768. Its totient is φ = 3111084288.

The previous prime is 12023131261. The next prime is 12023131319. The reversal of 12023131302 is 20313132021.

12023131302 is a `hidden beast` number, since 120 + 231 + 313 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17568 + ... + 156060.

It is an arithmetic number, because the mean of its divisors is an integer number (340279758).

Almost surely, 212023131302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12023131302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16333428384).

12023131302 is an abundant number, since it is smaller than the sum of its proper divisors (20643725466).

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

12023131302 is a wasteful number, since it uses less digits than its factorization.

12023131302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138574 (or 138571 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12023131302 its reverse (20313132021), we get a palindrome (32336263323).

The spelling of 12023131302 in words is "twelve billion, twenty-three million, one hundred thirty-one thousand, three hundred two".

Divisors: 1 2 3 6 7 9 13 14 18 21 26 39 42 53 63 78 91 106 117 126 159 182 234 273 318 371 477 546 689 742 819 954 1113 1378 1638 2067 2226 3339 4134 4823 6201 6678 9646 12402 14469 28938 43407 86814 138493 276986 415479 830958 969451 1246437 1800409 1938902 2492874 2908353 3600818 5401227 5816706 7340129 8725059 10802454 12602863 14680258 16203681 17450118 22020387 25205726 32407362 37808589 44040774 51380903 66061161 75617178 95421677 102761806 113425767 132122322 154142709 190843354 226851534 286265031 308285418 462428127 572530062 667951739 858795093 924856254 1335903478 1717590186 2003855217 4007710434 6011565651 12023131302