31113210213 has 8 divisors (see below), whose sum is σ = 46093644800. Its totient is φ = 20742140124.

The previous prime is 31113210197. The next prime is 31113210217. The reversal of 31113210213 is 31201231113.

31113210213 is a `hidden beast` number, since 311 + 132 + 10 + 213 = 666.

It is not a de Polignac number, because 31113210213 - 2⁴ = 31113210197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113210217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576170533 + ... + 576170586.

It is an arithmetic number, because the mean of its divisors is an integer number (5761705600).

Almost surely, 2^31113210213 is an apocalyptic number.

It is an amenable number.

31113210213 is a deficient number, since it is larger than the sum of its proper divisors (14980434587).

31113210213 is a wasteful number, since it uses less digits than its factorization.

31113210213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152341128 (or 1152341122 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31113210213 its reverse (31201231113), we get a palindrome (62314441326).

The spelling of 31113210213 in words is "thirty-one billion, one hundred thirteen million, two hundred ten thousand, two hundred thirteen".