31013232331012 has 24 divisors (see below), whose sum is σ = 54499080236832. Its totient is φ = 15442068259200.

The previous prime is 31013232331001. The next prime is 31013232331019. The reversal of 31013232331012 is 21013323231013.

It is a super-2 number, since 2×31013232331012² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31013232331019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93893583 + ... + 94223305.

It is an arithmetic number, because the mean of its divisors is an integer number (2270795009868).

Almost surely, 2^{31013232331012} is an apocalyptic number.

It is an amenable number.

31013232331012 is a deficient number, since it is larger than the sum of its proper divisors (23485847905820).

31013232331012 is a wasteful number, since it uses less digits than its factorization.

31013232331012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427539 (or 427537 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31013232331012 its reverse (21013323231013), we get a palindrome (52026555562025).

Subtracting from 31013232331012 its reverse (21013323231013), we obtain a palindrome (9999909099999).

The spelling of 31013232331012 in words is "thirty-one trillion, thirteen billion, two hundred thirty-two million, three hundred thirty-one thousand, twelve".