1312112100997 has 2 divisors, whose sum is σ = 1312112100998. Its totient is φ = 1312112100996.

The previous prime is 1312112100983. The next prime is 1312112101031. The reversal of 1312112100997 is 7990012112131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1246101131521 + 66010969476 = 1116289^2 + 256926^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312112100997 - 2³⁵ = 1277752362629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312112100097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656056050498 + 656056050499.

It is an arithmetic number, because the mean of its divisors is an integer number (656056050499).

Almost surely, 2^{1312112100997} is an apocalyptic number.

It is an amenable number.

1312112100997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312112100997 is an equidigital number, since it uses as much as digits as its factorization.

1312112100997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 37.

The spelling of 1312112100997 in words is "one trillion, three hundred twelve billion, one hundred twelve million, one hundred thousand, nine hundred ninety-seven".