3111318133961 has 2 divisors, whose sum is σ = 3111318133962. Its totient is φ = 3111318133960.

The previous prime is 3111318133949. The next prime is 3111318133967. The reversal of 3111318133961 is 1693318131113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2905729344400 + 205588789561 = 1704620^2 + 453419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3111318133961 is a prime.

It is not a weakly prime, because it can be changed into another prime (3111318133967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555659066980 + 1555659066981.

It is an arithmetic number, because the mean of its divisors is an integer number (1555659066981).

Almost surely, 2^{3111318133961} is an apocalyptic number.

It is an amenable number.

3111318133961 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111318133961 is an equidigital number, since it uses as much as digits as its factorization.

3111318133961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 41.

The spelling of 3111318133961 in words is "three trillion, one hundred eleven billion, three hundred eighteen million, one hundred thirty-three thousand, nine hundred sixty-one".