11313131957 has 2 divisors, whose sum is σ = 11313131958. Its totient is φ = 11313131956.

The previous prime is 11313131939. The next prime is 11313132031. The reversal of 11313131957 is 75913131311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5731398436 + 5581733521 = 75706^2 + 74711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11313131957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11313131657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656565978 + 5656565979.

It is an arithmetic number, because the mean of its divisors is an integer number (5656565979).

Almost surely, 2^11313131957 is an apocalyptic number.

It is an amenable number.

11313131957 is a deficient number, since it is larger than the sum of its proper divisors (1).

11313131957 is an equidigital number, since it uses as much as digits as its factorization.

11313131957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8505, while the sum is 35.

The spelling of 11313131957 in words is "eleven billion, three hundred thirteen million, one hundred thirty-one thousand, nine hundred fifty-seven".