31010320012 has 24 divisors (see below), whose sum is σ = 62036029440. Its totient is φ = 13286839440.

The previous prime is 31010319983. The next prime is 31010320039. The reversal of 31010320012 is 21002301013.

It is a junction number, because it is equal to n+sod(n) for n = 31010319974 and 31010320001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20812 + ... + 249907.

It is an arithmetic number, because the mean of its divisors is an integer number (2584834560).

Almost surely, 2^31010320012 is an apocalyptic number.

It is an amenable number.

31010320012 is an abundant number, since it is smaller than the sum of its proper divisors (31025709428).

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

31010320012 is a wasteful number, since it uses less digits than its factorization.

31010320012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274821 (or 274819 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 31010320012 its reverse (21002301013), we get a palindrome (52012621025).

The spelling of 31010320012 in words is "thirty-one billion, ten million, three hundred twenty thousand, twelve".