312213323311957 has 2 divisors, whose sum is σ = 312213323311958. Its totient is φ = 312213323311956.

The previous prime is 312213323311927. The next prime is 312213323311963. The reversal of 312213323311957 is 759113323312213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251593177932721 + 60620145379236 = 15861689^2 + 7785894^2 .

It is a cyclic number.

It is not a de Polignac number, because 312213323311957 - 2⁷ = 312213323311829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312213323311927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156106661655978 + 156106661655979.

It is an arithmetic number, because the mean of its divisors is an integer number (156106661655979).

Almost surely, 2^{312213323311957} is an apocalyptic number.

It is an amenable number.

312213323311957 is a deficient number, since it is larger than the sum of its proper divisors (1).

312213323311957 is an equidigital number, since it uses as much as digits as its factorization.

312213323311957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 46.

The spelling of 312213323311957 in words is "three hundred twelve trillion, two hundred thirteen billion, three hundred twenty-three million, three hundred eleven thousand, nine hundred fifty-seven".