31313202130 has 32 divisors (see below), whose sum is σ = 67806034560. Its totient is φ = 10170904320.

The previous prime is 31313202017. The next prime is 31313202191. The reversal of 31313202130 is 3120231313.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 31313202098 and 31313202107.

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, 11770551 + ... + 11773210.

It is an arithmetic number, because the mean of its divisors is an integer number (2118938580).

Almost surely, 2^31313202130 is an apocalyptic number.

31313202130 is an abundant number, since it is smaller than the sum of its proper divisors (36492832430).

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

31313202130 is a wasteful number, since it uses less digits than its factorization.

31313202130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23543794.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31313202130 its reverse (3120231313), we get a palindrome (34433433443).

The spelling of 31313202130 in words is "thirty-one billion, three hundred thirteen million, two hundred two thousand, one hundred thirty".