313000019957 has 2 divisors, whose sum is σ = 313000019958. Its totient is φ = 313000019956.

The previous prime is 313000019911. The next prime is 313000020017. The reversal of 313000019957 is 759910000313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305802364036 + 7197655921 = 552994^2 + 84839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313000019957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 313000019957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313000019557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156500009978 + 156500009979.

It is an arithmetic number, because the mean of its divisors is an integer number (156500009979).

Almost surely, 2^313000019957 is an apocalyptic number.

It is an amenable number.

313000019957 is a deficient number, since it is larger than the sum of its proper divisors (1).

313000019957 is an equidigital number, since it uses as much as digits as its factorization.

313000019957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25515, while the sum is 38.

The spelling of 313000019957 in words is "three hundred thirteen billion, nineteen thousand, nine hundred fifty-seven".