3157318457 has 2 divisors, whose sum is σ = 3157318458. Its totient is φ = 3157318456.

The previous prime is 3157318429. The next prime is 3157318477. The reversal of 3157318457 is 7548137513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2259956521 + 897361936 = 47539^2 + 29956^2 .

It is a cyclic number.

It is not a de Polignac number, because 3157318457 - 2¹⁸ = 3157056313 is a prime.

It is not a weakly prime, because it can be changed into another prime (3157318427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1578659228 + 1578659229.

It is an arithmetic number, because the mean of its divisors is an integer number (1578659229).

Almost surely, 2^3157318457 is an apocalyptic number.

It is an amenable number.

3157318457 is a deficient number, since it is larger than the sum of its proper divisors (1).

3157318457 is an equidigital number, since it uses as much as digits as its factorization.

3157318457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 44.

The square root of 3157318457 is about 56190.0209734789. The cubic root of 3157318457 is about 1467.0315801083.

The spelling of 3157318457 in words is "three billion, one hundred fifty-seven million, three hundred eighteen thousand, four hundred fifty-seven".