313504987 has 2 divisors, whose sum is σ = 313504988. Its totient is φ = 313504986.

The previous prime is 313504969. The next prime is 313504991. The reversal of 313504987 is 789405313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 313504987 - 2²³ = 305116379 is a prime.

It is not a weakly prime, because it can be changed into another prime (313504957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156752493 + 156752494.

It is an arithmetic number, because the mean of its divisors is an integer number (156752494).

Almost surely, 2^313504987 is an apocalyptic number.

313504987 is a deficient number, since it is larger than the sum of its proper divisors (1).

313504987 is an equidigital number, since it uses as much as digits as its factorization.

313504987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 313504987 is about 17706.0720375808. The cubic root of 313504987 is about 679.3310802291.

The spelling of 313504987 in words is "three hundred thirteen million, five hundred four thousand, nine hundred eighty-seven".