31130233321000 has 64 divisors (see below), whose sum is σ = 79466995632960. Its totient is φ = 11320084840000.

The previous prime is 31130233320973. The next prime is 31130233321009. The reversal of 31130233321000 is 12333203113.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (31130233321009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1414999606 + ... + 1415021605.

It is an arithmetic number, because the mean of its divisors is an integer number (1241671806765).

Almost surely, 2^{31130233321000} is an apocalyptic number.

It is an amenable number.

31130233321000 is an abundant number, since it is smaller than the sum of its proper divisors (48336762311960).

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

31130233321000 is a wasteful number, since it uses less digits than its factorization.

31130233321000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830021243 (or 2830021229 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31130233321000 its reverse (12333203113), we get a palindrome (31142566524113).

The spelling of 31130233321000 in words is "thirty-one trillion, one hundred thirty billion, two hundred thirty-three million, three hundred twenty-one thousand".