312115531276973 has 2 divisors, whose sum is σ = 312115531276974. Its totient is φ = 312115531276972.

The previous prime is 312115531276961. The next prime is 312115531277027. The reversal of 312115531276973 is 379672135511213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182128466268004 + 129987065008969 = 13495498^2 + 11401187^2 .

It is a cyclic number.

It is not a de Polignac number, because 312115531276973 - 2³⁴ = 312098351407789 is a prime.

It is a super-2 number, since 2×312115531276973² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312115531276933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156057765638486 + 156057765638487.

It is an arithmetic number, because the mean of its divisors is an integer number (156057765638487).

Almost surely, 2^{312115531276973} is an apocalyptic number.

It is an amenable number.

312115531276973 is a deficient number, since it is larger than the sum of its proper divisors (1).

312115531276973 is an equidigital number, since it uses as much as digits as its factorization.

312115531276973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7144200, while the sum is 56.

The spelling of 312115531276973 in words is "three hundred twelve trillion, one hundred fifteen billion, five hundred thirty-one million, two hundred seventy-six thousand, nine hundred seventy-three".