231304423453 has 2 divisors, whose sum is σ = 231304423454. Its totient is φ = 231304423452.

The previous prime is 231304423439. The next prime is 231304423481. The reversal of 231304423453 is 354324403132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178710798564 + 52593624889 = 422742^2 + 229333^2 .

It is a cyclic number.

It is not a de Polignac number, because 231304423453 - 2⁵ = 231304423421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231304423433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115652211726 + 115652211727.

It is an arithmetic number, because the mean of its divisors is an integer number (115652211727).

Almost surely, 2^231304423453 is an apocalyptic number.

It is an amenable number.

231304423453 is a deficient number, since it is larger than the sum of its proper divisors (1).

231304423453 is an equidigital number, since it uses as much as digits as its factorization.

231304423453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 231304423453 its reverse (354324403132), we get a palindrome (585628826585).

The spelling of 231304423453 in words is "two hundred thirty-one billion, three hundred four million, four hundred twenty-three thousand, four hundred fifty-three".