3131100021213 has 48 divisors (see below), whose sum is σ = 4998459113856. Its totient is φ = 1878625351680.

The previous prime is 3131100021211. The next prime is 3131100021289. The reversal of 3131100021213 is 3121200011313.

It is not a de Polignac number, because 3131100021213 - 2¹ = 3131100021211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131100021211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11645173 + ... + 11911013.

It is an arithmetic number, because the mean of its divisors is an integer number (104134564872).

Almost surely, 2^{3131100021213} is an apocalyptic number.

It is an amenable number.

3131100021213 is a deficient number, since it is larger than the sum of its proper divisors (1867359092643).

3131100021213 is a wasteful number, since it uses less digits than its factorization.

3131100021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269234 (or 269231 counting only the distinct ones).

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

Adding to 3131100021213 its reverse (3121200011313), we get a palindrome (6252300032526).

The spelling of 3131100021213 in words is "three trillion, one hundred thirty-one billion, one hundred million, twenty-one thousand, two hundred thirteen".