31023020002120 has 64 divisors (see below), whose sum is σ = 71120690392320. Its totient is φ = 12174750092544.

The previous prime is 31023020002097. The next prime is 31023020002193. The reversal of 31023020002120 is 2120002032013.

It is a junction number, because it is equal to n+sod(n) for n = 31023020002094 and 31023020002103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89900229 + ... + 90244651.

It is an arithmetic number, because the mean of its divisors is an integer number (1111260787380).

Almost surely, 2^{31023020002120} is an apocalyptic number.

It is an amenable number.

31023020002120 is an abundant number, since it is smaller than the sum of its proper divisors (40097670390200).

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

31023020002120 is a wasteful number, since it uses less digits than its factorization.

31023020002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386974 (or 386970 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31023020002120 its reverse (2120002032013), we get a palindrome (33143022034133).

The spelling of 31023020002120 in words is "thirty-one trillion, twenty-three billion, twenty million, two thousand, one hundred twenty".