12331312032 has 96 divisors (see below), whose sum is σ = 36910302912. Its totient is φ = 3571052544.

The previous prime is 12331312009. The next prime is 12331312033. The reversal of 12331312032 is 23021313321.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×12331312032² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12331312033) 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, 269398 + ... + 311829.

It is an arithmetic number, because the mean of its divisors is an integer number (384482322).

Almost surely, 2^12331312032 is an apocalyptic number.

12331312032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12331312032 is an abundant number, since it is smaller than the sum of its proper divisors (24578990880).

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

12331312032 is a wasteful number, since it uses less digits than its factorization.

12331312032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581270 (or 581262 counting only the distinct ones).

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

Adding to 12331312032 its reverse (23021313321), we get a palindrome (35352625353).

The spelling of 12331312032 in words is "twelve billion, three hundred thirty-one million, three hundred twelve thousand, thirty-two".