231321223099937 has 2 divisors, whose sum is σ = 231321223099938. Its totient is φ = 231321223099936.

The previous prime is 231321223099927. The next prime is 231321223100057. The reversal of 231321223099937 is 739990322123132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150882136661281 + 80439086438656 = 12283409^2 + 8968784^2 .

It is a cyclic number.

It is not a de Polignac number, because 231321223099937 - 2⁴ = 231321223099921 is a prime.

It is not a weakly prime, because it can be changed into another prime (231321223099907) 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, 115660611549968 + 115660611549969.

It is an arithmetic number, because the mean of its divisors is an integer number (115660611549969).

Almost surely, 2^{231321223099937} is an apocalyptic number.

It is an amenable number.

231321223099937 is a deficient number, since it is larger than the sum of its proper divisors (1).

231321223099937 is an equidigital number, since it uses as much as digits as its factorization.

231321223099937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6613488, while the sum is 56.

The spelling of 231321223099937 in words is "two hundred thirty-one trillion, three hundred twenty-one billion, two hundred twenty-three million, ninety-nine thousand, nine hundred thirty-seven".