313044344215957 has 2 divisors, whose sum is σ = 313044344215958. Its totient is φ = 313044344215956.

The previous prime is 313044344215921. The next prime is 313044344215961. The reversal of 313044344215957 is 759512443440313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309286178133156 + 3758166082801 = 17586534^2 + 1938599^2 .

It is an emirp because it is prime and its reverse (759512443440313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313044344215957 - 2⁷ = 313044344215829 is a prime.

It is a super-2 number, since 2×313044344215957² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313044344215898 and 313044344215907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313044344210957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156522172107978 + 156522172107979.

It is an arithmetic number, because the mean of its divisors is an integer number (156522172107979).

Almost surely, 2^{313044344215957} is an apocalyptic number.

It is an amenable number.

313044344215957 is a deficient number, since it is larger than the sum of its proper divisors (1).

313044344215957 is an equidigital number, since it uses as much as digits as its factorization.

313044344215957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21772800, while the sum is 55.

The spelling of 313044344215957 in words is "three hundred thirteen trillion, forty-four billion, three hundred forty-four million, two hundred fifteen thousand, nine hundred fifty-seven".