231302133281 has 2 divisors, whose sum is σ = 231302133282. Its totient is φ = 231302133280.

The previous prime is 231302133191. The next prime is 231302133341. The reversal of 231302133281 is 182331203132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168309165025 + 62992968256 = 410255^2 + 250984^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231302133281 is a prime.

It is a super-2 number, since 2×231302133281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231302130281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115651066640 + 115651066641.

It is an arithmetic number, because the mean of its divisors is an integer number (115651066641).

Almost surely, 2^231302133281 is an apocalyptic number.

It is an amenable number.

231302133281 is a deficient number, since it is larger than the sum of its proper divisors (1).

231302133281 is an equidigital number, since it uses as much as digits as its factorization.

231302133281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 231302133281 in words is "two hundred thirty-one billion, three hundred two million, one hundred thirty-three thousand, two hundred eighty-one".