3131032111111 has 2 divisors, whose sum is σ = 3131032111112. Its totient is φ = 3131032111110.

The previous prime is 3131032111073. The next prime is 3131032111159. The reversal of 3131032111111 is 1111112301313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3131032111111 - 2¹¹ = 3131032109063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131032111511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565516055555 + 1565516055556.

It is an arithmetic number, because the mean of its divisors is an integer number (1565516055556).

Almost surely, 2^{3131032111111} is an apocalyptic number.

3131032111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131032111111 is an equidigital number, since it uses as much as digits as its factorization.

3131032111111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 19.

Adding to 3131032111111 its reverse (1111112301313), we get a palindrome (4242144412424).

The spelling of 3131032111111 in words is "three trillion, one hundred thirty-one billion, thirty-two million, one hundred eleven thousand, one hundred eleven".