23181479 has 4 divisors (see below), whose sum is σ = 23303040. Its totient is φ = 23059920.

The previous prime is 23181461. The next prime is 23181491. The reversal of 23181479 is 97418132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23181479 - 2²⁴ = 6404263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23181439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60494 + ... + 60875.

It is an arithmetic number, because the mean of its divisors is an integer number (5825760).

Almost surely, 2^23181479 is an apocalyptic number.

23181479 is a deficient number, since it is larger than the sum of its proper divisors (121561).

23181479 is a wasteful number, since it uses less digits than its factorization.

23181479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121560.

The product of its digits is 12096, while the sum is 35.

The square root of 23181479 is about 4814.7148409849. The cubic root of 23181479 is about 285.1327134038.

The spelling of 23181479 in words is "twenty-three million, one hundred eighty-one thousand, four hundred seventy-nine".