231403421329 has 2 divisors, whose sum is σ = 231403421330. Its totient is φ = 231403421328.

The previous prime is 231403421311. The next prime is 231403421357. The reversal of 231403421329 is 923124304132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229874220304 + 1529201025 = 479452^2 + 39105^2 .

It is a cyclic number.

It is not a de Polignac number, because 231403421329 - 2⁵ = 231403421297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231403421294 and 231403421303.

It is not a weakly prime, because it can be changed into another prime (231403421629) 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, 115701710664 + 115701710665.

It is an arithmetic number, because the mean of its divisors is an integer number (115701710665).

Almost surely, 2^231403421329 is an apocalyptic number.

It is an amenable number.

231403421329 is a deficient number, since it is larger than the sum of its proper divisors (1).

231403421329 is an equidigital number, since it uses as much as digits as its factorization.

231403421329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 231403421329 in words is "two hundred thirty-one billion, four hundred three million, four hundred twenty-one thousand, three hundred twenty-nine".