31130232122120 has 32 divisors (see below), whose sum is σ = 70043359380120. Its totient is φ = 12452032919040.

The previous prime is 31130232122051. The next prime is 31130232122131. The reversal of 31130232122120 is 2122123203113.

It can be written as a sum of positive squares in 4 ways, for example, as 29633020478884 + 1497211643236 = 5443622^2 + 1223606^2 .

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, 7069310 + ... + 10594130.

Almost surely, 2^{31130232122120} is an apocalyptic number.

It is an amenable number.

31130232122120 is an abundant number, since it is smaller than the sum of its proper divisors (38913127258000).

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

31130232122120 is a wasteful number, since it uses less digits than its factorization.

31130232122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3745625 (or 3745621 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31130232122120 its reverse (2122123203113), we get a palindrome (33252355325233).

The spelling of 31130232122120 in words is "thirty-one trillion, one hundred thirty billion, two hundred thirty-two million, one hundred twenty-two thousand, one hundred twenty".