231703689536129 has 2 divisors, whose sum is σ = 231703689536130. Its totient is φ = 231703689536128.

The previous prime is 231703689536087. The next prime is 231703689536147. The reversal of 231703689536129 is 921635986307132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224377870645504 + 7325818890625 = 14979248^2 + 2706625^2 .

It is a cyclic number.

It is not a de Polignac number, because 231703689536129 - 2²⁴ = 231703672758913 is a prime.

It is not a weakly prime, because it can be changed into another prime (231703689536329) 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, 115851844768064 + 115851844768065.

It is an arithmetic number, because the mean of its divisors is an integer number (115851844768065).

Almost surely, 2^{231703689536129} is an apocalyptic number.

It is an amenable number.

231703689536129 is a deficient number, since it is larger than the sum of its proper divisors (1).

231703689536129 is an equidigital number, since it uses as much as digits as its factorization.

231703689536129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88179840, while the sum is 65.

The spelling of 231703689536129 in words is "two hundred thirty-one trillion, seven hundred three billion, six hundred eighty-nine million, five hundred thirty-six thousand, one hundred twenty-nine".