31311001031320 has 32 divisors (see below), whose sum is σ = 70464945697200. Its totient is φ = 12521699367808.

The previous prime is 31311001031293. The next prime is 31311001031339. The reversal of 31311001031320 is 2313010011313.

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, 84219850 + ... + 84590809.

Almost surely, 2^{31311001031320} is an apocalyptic number.

It is an amenable number.

31311001031320 is an abundant number, since it is smaller than the sum of its proper divisors (39153944665880).

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

31311001031320 is a wasteful number, since it uses less digits than its factorization.

31311001031320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168815307 (or 168815303 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31311001031320 its reverse (2313010011313), we get a palindrome (33624011042633).

The spelling of 31311001031320 in words is "thirty-one trillion, three hundred eleven billion, one million, thirty-one thousand, three hundred twenty".