23232391 has 16 divisors (see below), whose sum is σ = 29139264. Its totient is φ = 18031104.

The previous prime is 23232379. The next prime is 23232403. The reversal of 23232391 is 19323232.

It is an interprime number because it is at equal distance from previous prime (23232379) and next prime (23232403).

It is not a de Polignac number, because 23232391 - 2⁵ = 23232359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23232311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2415 + ... + 7231.

It is an arithmetic number, because the mean of its divisors is an integer number (1821204).

Almost surely, 2^23232391 is an apocalyptic number.

23232391 is a deficient number, since it is larger than the sum of its proper divisors (5906873).

23232391 is a wasteful number, since it uses less digits than its factorization.

23232391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4890.

The product of its digits is 1944, while the sum is 25.

The square root of 23232391 is about 4819.9990663900. Note that the first 3 decimals coincide. The cubic root of 23232391 is about 285.3413003581.

It can be divided in two parts, 232 and 32391, that added together give a palindrome (32623).

The spelling of 23232391 in words is "twenty-three million, two hundred thirty-two thousand, three hundred ninety-one".