31300320213 has 8 divisors (see below), whose sum is σ = 46370844800. Its totient is φ = 20866880124.

The previous prime is 31300320211. The next prime is 31300320307. The reversal of 31300320213 is 31202300313.

31300320213 is a `hidden beast` number, since 3 + 130 + 0 + 320 + 213 = 666.

It is not a de Polignac number, because 31300320213 - 2¹ = 31300320211 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 (31300320211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579635533 + ... + 579635586.

It is an arithmetic number, because the mean of its divisors is an integer number (5796355600).

Almost surely, 2^31300320213 is an apocalyptic number.

It is an amenable number.

31300320213 is a deficient number, since it is larger than the sum of its proper divisors (15070524587).

31300320213 is a wasteful number, since it uses less digits than its factorization.

31300320213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159271128 (or 1159271122 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 31300320213 its reverse (31202300313), we get a palindrome (62502620526).

The spelling of 31300320213 in words is "thirty-one billion, three hundred million, three hundred twenty thousand, two hundred thirteen".