31312013536256 has 44 divisors (see below), whose sum is σ = 62684034213240. Its totient is φ = 15633349386240.

The previous prime is 31312013536253. The next prime is 31312013536277. The reversal of 31312013536256 is 65263531021313.

It is not an unprimeable number, because it can be changed into a prime (31312013536253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21418421 + ... + 22833588.

It is an arithmetic number, because the mean of its divisors is an integer number (1424637141210).

Almost surely, 2^{31312013536256} is an apocalyptic number.

It is an amenable number.

31312013536256 is an abundant number, since it is smaller than the sum of its proper divisors (31372020676984).

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

31312013536256 is an equidigital number, since it uses as much as digits as its factorization.

31312013536256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44252720 (or 44252702 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 41.

Adding to 31312013536256 its reverse (65263531021313), we get a palindrome (96575544557569).

The spelling of 31312013536256 in words is "thirty-one trillion, three hundred twelve billion, thirteen million, five hundred thirty-six thousand, two hundred fifty-six".