31331320003312 has 40 divisors (see below), whose sum is σ = 70156005487200. Its totient is φ = 13276835438592.

The previous prime is 31331320003307. The next prime is 31331320003327. The reversal of 31331320003312 is 21330002313313.

It is a super-2 number, since 2×31331320003312² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 1571585137 + ... + 1571605072.

It is an arithmetic number, because the mean of its divisors is an integer number (1753900137180).

Almost surely, 2^{31331320003312} is an apocalyptic number.

It is an amenable number.

31331320003312 is an abundant number, since it is smaller than the sum of its proper divisors (38824685483888).

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

31331320003312 is a wasteful number, since it uses less digits than its factorization.

31331320003312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143190313 (or 3143190307 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 31331320003312 its reverse (21330002313313), we get a palindrome (52661322316625).

The spelling of 31331320003312 in words is "thirty-one trillion, three hundred thirty-one billion, three hundred twenty million, three thousand, three hundred twelve".