31031200013232 has 80 divisors (see below), whose sum is σ = 85331212560000. Its totient is φ = 9689221504512.

The previous prime is 31031200013207. The next prime is 31031200013249. The reversal of 31031200013232 is 23231000213013.

It is a super-2 number, since 2×31031200013232² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31031200013199 and 31031200013208.

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, 191072982 + ... + 191235317.

It is an arithmetic number, because the mean of its divisors is an integer number (1066640157000).

Almost surely, 2^{31031200013232} is an apocalyptic number.

It is an amenable number.

31031200013232 is an abundant number, since it is smaller than the sum of its proper divisors (54300012546768).

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

31031200013232 is a wasteful number, since it uses less digits than its factorization.

31031200013232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382308418 (or 382308412 counting only the distinct ones).

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

Adding to 31031200013232 its reverse (23231000213013), we get a palindrome (54262200226245).

The spelling of 31031200013232 in words is "thirty-one trillion, thirty-one billion, two hundred million, thirteen thousand, two hundred thirty-two".