3115515561331 has 2 divisors, whose sum is σ = 3115515561332. Its totient is φ = 3115515561330.

The previous prime is 3115515561269. The next prime is 3115515561359. The reversal of 3115515561331 is 1331655155113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3115515561331 - 2⁷ = 3115515561203 is a prime.

It is a super-2 number, since 2×3115515561331² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3115515561371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1557757780665 + 1557757780666.

It is an arithmetic number, because the mean of its divisors is an integer number (1557757780666).

Almost surely, 2^{3115515561331} is an apocalyptic number.

3115515561331 is a deficient number, since it is larger than the sum of its proper divisors (1).

3115515561331 is an equidigital number, since it uses as much as digits as its factorization.

3115515561331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 101250, while the sum is 40.

The spelling of 3115515561331 in words is "three trillion, one hundred fifteen billion, five hundred fifteen million, five hundred sixty-one thousand, three hundred thirty-one".