12031431324 has 48 divisors (see below), whose sum is σ = 30636869760. Its totient is φ = 3644530240.

The previous prime is 12031431323. The next prime is 12031431329. The reversal of 12031431324 is 42313413021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12031431294 and 12031431303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031431323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372442 + ... + 403454.

It is an arithmetic number, because the mean of its divisors is an integer number (638268120).

Almost surely, 2^12031431324 is an apocalyptic number.

It is an amenable number.

12031431324 is an abundant number, since it is smaller than the sum of its proper divisors (18605438436).

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

12031431324 is a wasteful number, since it uses less digits than its factorization.

12031431324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33970 (or 33968 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 12031431324 its reverse (42313413021), we get a palindrome (54344844345).

The spelling of 12031431324 in words is "twelve billion, thirty-one million, four hundred thirty-one thousand, three hundred twenty-four".