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12232031020 = 22511411356101
BaseRepresentation
bin10110110010001010…
…11111101100101100
31011120110201120001221
423121011133230230
5200022344443040
65341434513124
7612056356006
oct133105375454
934513646057
1012232031020
115207731a50
1224545957a4
1311cc2553a1
1484077b376
154b8d0574a
hex2d915fb2c

12232031020 has 48 divisors (see below), whose sum is σ = 28705967136. Its totient is φ = 4339520000.

The previous prime is 12232030999. The next prime is 12232031023. The reversal of 12232031020 is 2013023221.

It is a junction number, because it is equal to n+sod(n) for n = 12232030985 and 12232031003.

It is not an unprimeable number, because it can be changed into a prime (12232031023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 669031 + ... + 687070.

It is an arithmetic number, because the mean of its divisors is an integer number (598040982).

Almost surely, 212232031020 is an apocalyptic number.

12232031020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12232031020 is an abundant number, since it is smaller than the sum of its proper divisors (16473936116).

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

12232031020 is a wasteful number, since it uses less digits than its factorization.

12232031020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356162 (or 1356160 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12232031020 its reverse (2013023221), we get a palindrome (14245054241).

The spelling of 12232031020 in words is "twelve billion, two hundred thirty-two million, thirty-one thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 41 44 55 82 110 164 205 220 410 451 820 902 1804 2255 4510 9020 1356101 2712202 5424404 6780505 13561010 14917111 27122020 29834222 55600141 59668444 74585555 111200282 149171110 222400564 278000705 298342220 556001410 611601551 1112002820 1223203102 2446406204 3058007755 6116015510 12232031020