31312101236497 has 2 divisors, whose sum is σ = 31312101236498. Its totient is φ = 31312101236496.

The previous prime is 31312101236477. The next prime is 31312101236587. The reversal of 31312101236497 is 79463210121313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31278248548416 + 33852688081 = 5592696^2 + 183991^2 .

It is a cyclic number.

It is not a de Polignac number, because 31312101236497 - 2⁷ = 31312101236369 is a prime.

It is not a weakly prime, because it can be changed into another prime (31312101236477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656050618248 + 15656050618249.

It is an arithmetic number, because the mean of its divisors is an integer number (15656050618249).

Almost surely, 2^{31312101236497} is an apocalyptic number.

It is an amenable number.

31312101236497 is a deficient number, since it is larger than the sum of its proper divisors (1).

31312101236497 is an equidigital number, since it uses as much as digits as its factorization.

31312101236497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 31312101236497 in words is "thirty-one trillion, three hundred twelve billion, one hundred one million, two hundred thirty-six thousand, four hundred ninety-seven".