231304403969 has 2 divisors, whose sum is σ = 231304403970. Its totient is φ = 231304403968.

The previous prime is 231304403929. The next prime is 231304403983. The reversal of 231304403969 is 969304403132.

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., 130383821569 + 100920582400 = 361087^2 + 317680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231304403969 is a prime.

It is a super-2 number, since 2×231304403969² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (231304403929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115652201984 + 115652201985.

It is an arithmetic number, because the mean of its divisors is an integer number (115652201985).

Almost surely, 2^231304403969 is an apocalyptic number.

It is an amenable number.

231304403969 is a deficient number, since it is larger than the sum of its proper divisors (1).

231304403969 is an equidigital number, since it uses as much as digits as its factorization.

231304403969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 44.

The spelling of 231304403969 in words is "two hundred thirty-one billion, three hundred four million, four hundred three thousand, nine hundred sixty-nine".