312021210100997 has 2 divisors, whose sum is σ = 312021210100998. Its totient is φ = 312021210100996.

The previous prime is 312021210100981. The next prime is 312021210101023. The reversal of 312021210100997 is 799001012120213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311331697424836 + 689512676161 = 17644594^2 + 830369^2 .

It is a cyclic number.

It is not a de Polignac number, because 312021210100997 - 2⁴ = 312021210100981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312021210100997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312021210100967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156010605050498 + 156010605050499.

It is an arithmetic number, because the mean of its divisors is an integer number (156010605050499).

Almost surely, 2^{312021210100997} is an apocalyptic number.

It is an amenable number.

312021210100997 is a deficient number, since it is larger than the sum of its proper divisors (1).

312021210100997 is an equidigital number, since it uses as much as digits as its factorization.

312021210100997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 312021210100997 in words is "three hundred twelve trillion, twenty-one billion, two hundred ten million, one hundred thousand, nine hundred ninety-seven".