313089857 has 2 divisors, whose sum is σ = 313089858. Its totient is φ = 313089856.

The previous prime is 313089853. The next prime is 313089929. The reversal of 313089857 is 758980313.

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., 191296561 + 121793296 = 13831^2 + 11036^2 .

It is a cyclic number.

It is not a de Polignac number, because 313089857 - 2² = 313089853 is a prime.

It is not a weakly prime, because it can be changed into another prime (313089853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156544928 + 156544929.

It is an arithmetic number, because the mean of its divisors is an integer number (156544929).

Almost surely, 2^313089857 is an apocalyptic number.

It is an amenable number.

313089857 is a deficient number, since it is larger than the sum of its proper divisors (1).

313089857 is an equidigital number, since it uses as much as digits as its factorization.

313089857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 313089857 is about 17694.3453396841. The cubic root of 313089857 is about 679.0311006539.

The spelling of 313089857 in words is "three hundred thirteen million, eighty-nine thousand, eight hundred fifty-seven".