231344479 has 2 divisors, whose sum is σ = 231344480. Its totient is φ = 231344478.

The previous prime is 231344471. The next prime is 231344507. The reversal of 231344479 is 974443132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231344479 - 2³ = 231344471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231344471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115672239 + 115672240.

It is an arithmetic number, because the mean of its divisors is an integer number (115672240).

Almost surely, 2^231344479 is an apocalyptic number.

231344479 is a deficient number, since it is larger than the sum of its proper divisors (1).

231344479 is an equidigital number, since it uses as much as digits as its factorization.

231344479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 37.

The square root of 231344479 is about 15210.0124589035. The cubic root of 231344479 is about 613.8840927182.

The spelling of 231344479 in words is "two hundred thirty-one million, three hundred forty-four thousand, four hundred seventy-nine".