23601139 has 4 divisors (see below), whose sum is σ = 23676856. Its totient is φ = 23525424.

The previous prime is 23601131. The next prime is 23601161. The reversal of 23601139 is 93110632.

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 23601139 - 2³ = 23601131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23601131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37389 + ... + 38014.

It is an arithmetic number, because the mean of its divisors is an integer number (5919214).

Almost surely, 2^23601139 is an apocalyptic number.

23601139 is a deficient number, since it is larger than the sum of its proper divisors (75717).

23601139 is an equidigital number, since it uses as much as digits as its factorization.

23601139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75716.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 23601139 is about 4858.1003489018. The cubic root of 23601139 is about 286.8430428627.

The spelling of 23601139 in words is "twenty-three million, six hundred one thousand, one hundred thirty-nine".