31312112232 has 64 divisors (see below), whose sum is σ = 84500496000. Its totient is φ = 9639305984.

The previous prime is 31312112207. The next prime is 31312112281. The reversal of 31312112232 is 23221121313.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 31312112199 and 31312112208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 962007 + ... + 994022.

It is an arithmetic number, because the mean of its divisors is an integer number (1320320250).

Almost surely, 2^31312112232 is an apocalyptic number.

It is an amenable number.

31312112232 is an abundant number, since it is smaller than the sum of its proper divisors (53188383768).

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

31312112232 is a wasteful number, since it uses less digits than its factorization.

31312112232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956090 (or 1956086 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 31312112232 its reverse (23221121313), we get a palindrome (54533233545).

The spelling of 31312112232 in words is "thirty-one billion, three hundred twelve million, one hundred twelve thousand, two hundred thirty-two".