23240139 has 16 divisors (see below), whose sum is σ = 35334432. Its totient is φ = 13459968.

The previous prime is 23240131. The next prime is 23240149. The reversal of 23240139 is 93104232.

It is not a de Polignac number, because 23240139 - 2³ = 23240131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23240131) 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, 16864 + ... + 18189.

It is an arithmetic number, because the mean of its divisors is an integer number (2208402).

Almost surely, 2^23240139 is an apocalyptic number.

23240139 is a deficient number, since it is larger than the sum of its proper divisors (12094293).

23240139 is a wasteful number, since it uses less digits than its factorization.

23240139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35086.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 23240139 is about 4820.8027339853. The cubic root of 23240139 is about 285.3730172639.

The spelling of 23240139 in words is "twenty-three million, two hundred forty thousand, one hundred thirty-nine".