31321332002120 has 32 divisors (see below), whose sum is σ = 70520010480000. Its totient is φ = 12520174849728.

The previous prime is 31321332002119. The next prime is 31321332002173. The reversal of 31321332002120 is 2120023312313.

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, 261125264 + ... + 261245183.

It is an arithmetic number, because the mean of its divisors is an integer number (2203750327500).

Almost surely, 2^{31321332002120} is an apocalyptic number.

It is an amenable number.

31321332002120 is an abundant number, since it is smaller than the sum of its proper divisors (39198678477880).

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

31321332002120 is a wasteful number, since it uses less digits than its factorization.

31321332002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522371957 (or 522371953 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31321332002120 its reverse (2120023312313), we get a palindrome (33441355314433).

The spelling of 31321332002120 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred thirty-two million, two thousand, one hundred twenty".