23531479 has 2 divisors, whose sum is σ = 23531480. Its totient is φ = 23531478.

The previous prime is 23531467. The next prime is 23531489. The reversal of 23531479 is 97413532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23531479 - 2⁵ = 23531447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23531419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11765739 + 11765740.

It is an arithmetic number, because the mean of its divisors is an integer number (11765740).

Almost surely, 2^23531479 is an apocalyptic number.

23531479 is a deficient number, since it is larger than the sum of its proper divisors (1).

23531479 is an equidigital number, since it uses as much as digits as its factorization.

23531479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 34.

The square root of 23531479 is about 4850.9255817833. The cubic root of 23531479 is about 286.5605539898.

It can be divided in two parts, 2353147 and 9, that added together give a square (2353156 = 1534²).

The spelling of 23531479 in words is "twenty-three million, five hundred thirty-one thousand, four hundred seventy-nine".