3131330021111 has 2 divisors, whose sum is σ = 3131330021112. Its totient is φ = 3131330021110.

The previous prime is 3131330021059. The next prime is 3131330021177. The reversal of 3131330021111 is 1111200331313.

3131330021111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131330021111 is a prime.

It is a super-2 number, since 2×3131330021111² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131330020111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565665010555 + 1565665010556.

It is an arithmetic number, because the mean of its divisors is an integer number (1565665010556).

Almost surely, 2^{3131330021111} is an apocalyptic number.

3131330021111 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131330021111 is an equidigital number, since it uses as much as digits as its factorization.

3131330021111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 3131330021111 its reverse (1111200331313), we get a palindrome (4242530352424).

The spelling of 3131330021111 in words is "three trillion, one hundred thirty-one billion, three hundred thirty million, twenty-one thousand, one hundred eleven".