1231230200957 has 2 divisors, whose sum is σ = 1231230200958. Its totient is φ = 1231230200956.

The previous prime is 1231230200951. The next prime is 1231230201107. The reversal of 1231230200957 is 7590020321321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1046490126361 + 184740074596 = 1022981^2 + 429814^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231230200957 - 2²⁰ = 1231229152381 is a prime.

It is a super-2 number, since 2×1231230200957² (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 (1231230200951) 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, 615615100478 + 615615100479.

It is an arithmetic number, because the mean of its divisors is an integer number (615615100479).

Almost surely, 2^{1231230200957} is an apocalyptic number.

It is an amenable number.

1231230200957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231230200957 is an equidigital number, since it uses as much as digits as its factorization.

1231230200957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 1231230200957 in words is "one trillion, two hundred thirty-one billion, two hundred thirty million, two hundred thousand, nine hundred fifty-seven".