313739887 has 2 divisors, whose sum is σ = 313739888. Its totient is φ = 313739886.

The previous prime is 313739869. The next prime is 313739903. The reversal of 313739887 is 788937313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 313739887 - 2⁷ = 313739759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 313739887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313739827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156869943 + 156869944.

It is an arithmetic number, because the mean of its divisors is an integer number (156869944).

Almost surely, 2^313739887 is an apocalyptic number.

313739887 is a deficient number, since it is larger than the sum of its proper divisors (1).

313739887 is an equidigital number, since it uses as much as digits as its factorization.

313739887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 49.

The square root of 313739887 is about 17712.7041131500. The cubic root of 313739887 is about 679.5007054228.

The spelling of 313739887 in words is "three hundred thirteen million, seven hundred thirty-nine thousand, eight hundred eighty-seven".