315880457 has 2 divisors, whose sum is σ = 315880458. Its totient is φ = 315880456.

The previous prime is 315880393. The next prime is 315880463. The reversal of 315880457 is 754088513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260467321 + 55413136 = 16139^2 + 7444^2 .

It is a cyclic number.

It is not a de Polignac number, because 315880457 - 2⁶ = 315880393 is a prime.

It is a super-2 number, since 2×315880457² = 199560926229057698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (315880057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157940228 + 157940229.

It is an arithmetic number, because the mean of its divisors is an integer number (157940229).

Almost surely, 2^315880457 is an apocalyptic number.

It is an amenable number.

315880457 is a deficient number, since it is larger than the sum of its proper divisors (1).

315880457 is an equidigital number, since it uses as much as digits as its factorization.

315880457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 315880457 is about 17773.0261069971. The cubic root of 315880457 is about 681.0425594932.

The spelling of 315880457 in words is "three hundred fifteen million, eight hundred eighty thousand, four hundred fifty-seven".