1231310023199 has 2 divisors, whose sum is σ = 1231310023200. Its totient is φ = 1231310023198.

The previous prime is 1231310023187. The next prime is 1231310023297. The reversal of 1231310023199 is 9913200131321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1231310023199 - 2⁴ = 1231310023183 is a prime.

It is a super-2 number, since 2×1231310023199² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231310023109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615655011599 + 615655011600.

It is an arithmetic number, because the mean of its divisors is an integer number (615655011600).

Almost surely, 2^{1231310023199} is an apocalyptic number.

1231310023199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231310023199 is an equidigital number, since it uses as much as digits as its factorization.

1231310023199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 35.

The spelling of 1231310023199 in words is "one trillion, two hundred thirty-one billion, three hundred ten million, twenty-three thousand, one hundred ninety-nine".