315896887 has 2 divisors, whose sum is σ = 315896888. Its totient is φ = 315896886.

The previous prime is 315896843. The next prime is 315896897. The reversal of 315896887 is 788698513.

It is a strong prime.

It is an emirp because it is prime and its reverse (788698513) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315896887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315896827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157948443 + 157948444.

It is an arithmetic number, because the mean of its divisors is an integer number (157948444).

Almost surely, 2^315896887 is an apocalyptic number.

315896887 is a deficient number, since it is larger than the sum of its proper divisors (1).

315896887 is an equidigital number, since it uses as much as digits as its factorization.

315896887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 55.

The square root of 315896887 is about 17773.4883182790. The cubic root of 315896887 is about 681.0543670563.

The spelling of 315896887 in words is "three hundred fifteen million, eight hundred ninety-six thousand, eight hundred eighty-seven".