31023110120 has 16 divisors (see below), whose sum is σ = 69801997860. Its totient is φ = 12409244032.

The previous prime is 31023110071. The next prime is 31023110227. The reversal of 31023110120 is 2101132013.

It can be written as a sum of positive squares in 2 ways, for example, as 31011914404 + 11195716 = 176102^2 + 3346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31023110095 and 31023110104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387788837 + ... + 387788916.

Almost surely, 2^31023110120 is an apocalyptic number.

It is an amenable number.

31023110120 is an abundant number, since it is smaller than the sum of its proper divisors (38778887740).

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

31023110120 is a wasteful number, since it uses less digits than its factorization.

31023110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775577764 (or 775577760 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 31023110120 its reverse (2101132013), we get a palindrome (33124242133).

The spelling of 31023110120 in words is "thirty-one billion, twenty-three million, one hundred ten thousand, one hundred twenty".