313038857 has 2 divisors, whose sum is σ = 313038858. Its totient is φ = 313038856.

The previous prime is 313038853. The next prime is 313038911. The reversal of 313038857 is 758830313.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 282777856 + 30261001 = 16816^2 + 5501^2 .

It is a cyclic number.

It is not a de Polignac number, because 313038857 - 2² = 313038853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 313038857.

It is not a weakly prime, because it can be changed into another prime (313038853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156519428 + 156519429.

It is an arithmetic number, because the mean of its divisors is an integer number (156519429).

Almost surely, 2^313038857 is an apocalyptic number.

It is an amenable number.

313038857 is a deficient number, since it is larger than the sum of its proper divisors (1).

313038857 is an equidigital number, since it uses as much as digits as its factorization.

313038857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 313038857 is about 17692.9041426217. The cubic root of 313038857 is about 678.9942289530.

The spelling of 313038857 in words is "three hundred thirteen million, thirty-eight thousand, eight hundred fifty-seven".