315023505457 has 2 divisors, whose sum is σ = 315023505458. Its totient is φ = 315023505456.

The previous prime is 315023505437. The next prime is 315023505523. The reversal of 315023505457 is 754505320513.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270583070976 + 44440434481 = 520176^2 + 210809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315023505457 is a prime.

It is not a weakly prime, because it can be changed into another prime (315023505437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157511752728 + 157511752729.

It is an arithmetic number, because the mean of its divisors is an integer number (157511752729).

Almost surely, 2^315023505457 is an apocalyptic number.

It is an amenable number.

315023505457 is a deficient number, since it is larger than the sum of its proper divisors (1).

315023505457 is an equidigital number, since it uses as much as digits as its factorization.

315023505457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 315000, while the sum is 40.

The spelling of 315023505457 in words is "three hundred fifteen billion, twenty-three million, five hundred five thousand, four hundred fifty-seven".