313445887 has 2 divisors, whose sum is σ = 313445888. Its totient is φ = 313445886.

The previous prime is 313445879. The next prime is 313445911. The reversal of 313445887 is 788544313.

It is a weak prime.

It is an emirp because it is prime and its reverse (788544313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313445887 - 2³ = 313445879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313445827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156722943 + 156722944.

It is an arithmetic number, because the mean of its divisors is an integer number (156722944).

Almost surely, 2^313445887 is an apocalyptic number.

313445887 is a deficient number, since it is larger than the sum of its proper divisors (1).

313445887 is an equidigital number, since it uses as much as digits as its factorization.

313445887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 43.

The square root of 313445887 is about 17704.4030399220. The cubic root of 313445887 is about 679.2883897972.

The spelling of 313445887 in words is "three hundred thirteen million, four hundred forty-five thousand, eight hundred eighty-seven".