23239971 has 6 divisors (see below), whose sum is σ = 33568860. Its totient is φ = 15493308.

The previous prime is 23239961. The next prime is 23239973. The reversal of 23239971 is 17993232.

It is not a de Polignac number, because 23239971 - 2¹⁵ = 23207203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23239973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1291101 + ... + 1291118.

It is an arithmetic number, because the mean of its divisors is an integer number (5594810).

Almost surely, 2^23239971 is an apocalyptic number.

23239971 is a deficient number, since it is larger than the sum of its proper divisors (10328889).

23239971 is a wasteful number, since it uses less digits than its factorization.

23239971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582225 (or 2582222 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 23239971 is about 4820.7853094698. The cubic root of 23239971 is about 285.3723296206.

The spelling of 23239971 in words is "twenty-three million, two hundred thirty-nine thousand, nine hundred seventy-one".