12312031332 has 48 divisors (see below), whose sum is σ = 29355346944. Its totient is φ = 4015284000.

The previous prime is 12312031301. The next prime is 12312031349. The reversal of 12312031332 is 23313021321.

It is a super-2 number, since 2×12312031332² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12312031299 and 12312031308.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56457 + ... + 166767.

It is an arithmetic number, because the mean of its divisors is an integer number (611569728).

Almost surely, 2^12312031332 is an apocalyptic number.

12312031332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12312031332 is an abundant number, since it is smaller than the sum of its proper divisors (17043315612).

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

12312031332 is a wasteful number, since it uses less digits than its factorization.

12312031332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110520 (or 110518 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12312031332 its reverse (23313021321), we get a palindrome (35625052653).

The spelling of 12312031332 in words is "twelve billion, three hundred twelve million, thirty-one thousand, three hundred thirty-two".