315851563 has 2 divisors, whose sum is σ = 315851564. Its totient is φ = 315851562.

The previous prime is 315851537. The next prime is 315851567. The reversal of 315851563 is 365158513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315851563 - 2⁹ = 315851051 is a prime.

It is not a weakly prime, because it can be changed into another prime (315851567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157925781 + 157925782.

It is an arithmetic number, because the mean of its divisors is an integer number (157925782).

Almost surely, 2^315851563 is an apocalyptic number.

315851563 is a deficient number, since it is larger than the sum of its proper divisors (1).

315851563 is an equidigital number, since it uses as much as digits as its factorization.

315851563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 37.

The square root of 315851563 is about 17772.2132273952. The cubic root of 315851563 is about 681.0217935745.

The spelling of 315851563 in words is "three hundred fifteen million, eight hundred fifty-one thousand, five hundred sixty-three".