312311313208997 has 2 divisors, whose sum is σ = 312311313208998. Its totient is φ = 312311313208996.

The previous prime is 312311313208987. The next prime is 312311313209029. The reversal of 312311313208997 is 799802313113213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 293057901296356 + 19253411912641 = 17118934^2 + 4387871^2 .

It is a cyclic number.

It is not a de Polignac number, because 312311313208997 - 2¹⁰ = 312311313207973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312311313208927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156155656604498 + 156155656604499.

It is an arithmetic number, because the mean of its divisors is an integer number (156155656604499).

Almost surely, 2^{312311313208997} is an apocalyptic number.

It is an amenable number.

312311313208997 is a deficient number, since it is larger than the sum of its proper divisors (1).

312311313208997 is an equidigital number, since it uses as much as digits as its factorization.

312311313208997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The spelling of 312311313208997 in words is "three hundred twelve trillion, three hundred eleven billion, three hundred thirteen million, two hundred eight thousand, nine hundred ninety-seven".