31120130310213 has 16 divisors (see below), whose sum is σ = 47421915447296. Its totient is φ = 17782644918960.

The previous prime is 31120130310197. The next prime is 31120130310239. The reversal of 31120130310213 is 31201303102113.

It is a happy number.

It is not a de Polignac number, because 31120130310213 - 2⁴ = 31120130310197 is a prime.

It is a super-2 number, since 2×31120130310213² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31120130310213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120130350213) 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, 10608181 + ... + 13220202.

It is an arithmetic number, because the mean of its divisors is an integer number (2963869715456).

Almost surely, 2^{31120130310213} is an apocalyptic number.

It is an amenable number.

31120130310213 is a deficient number, since it is larger than the sum of its proper divisors (16301785137083).

31120130310213 is a wasteful number, since it uses less digits than its factorization.

31120130310213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23890584.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31120130310213 its reverse (31201303102113), we get a palindrome (62321433412326).

The spelling of 31120130310213 in words is "thirty-one trillion, one hundred twenty billion, one hundred thirty million, three hundred ten thousand, two hundred thirteen".