23171439 has 16 divisors (see below), whose sum is σ = 31391360. Its totient is φ = 15202080.

The previous prime is 23171429. The next prime is 23171443. The reversal of 23171439 is 93417132.

It is not a de Polignac number, because 23171439 - 2¹² = 23167343 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 (23171429) 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 15 ways as a sum of consecutive naturals, for example, 75324 + ... + 75630.

It is an arithmetic number, because the mean of its divisors is an integer number (1961960).

Almost surely, 2^23171439 is an apocalyptic number.

23171439 is a deficient number, since it is larger than the sum of its proper divisors (8219921).

23171439 is a wasteful number, since it uses less digits than its factorization.

23171439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630.

The product of its digits is 4536, while the sum is 30.

The square root of 23171439 is about 4813.6720910340. The cubic root of 23171439 is about 285.0915433843.

The spelling of 23171439 in words is "twenty-three million, one hundred seventy-one thousand, four hundred thirty-nine".