23501389 has 4 divisors (see below), whose sum is σ = 23852224. Its totient is φ = 23150556.

The previous prime is 23501371. The next prime is 23501393. The reversal of 23501389 is 98310532.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23501389 - 2⁹ = 23500877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23501389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23541389) 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 3 ways as a sum of consecutive naturals, for example, 175317 + ... + 175450.

It is an arithmetic number, because the mean of its divisors is an integer number (5963056).

Almost surely, 2^23501389 is an apocalyptic number.

It is an amenable number.

23501389 is a deficient number, since it is larger than the sum of its proper divisors (350835).

23501389 is an equidigital number, since it uses as much as digits as its factorization.

23501389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350834.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 23501389 is about 4847.8231197105. The cubic root of 23501389 is about 286.4383590219.

The spelling of 23501389 in words is "twenty-three million, five hundred one thousand, three hundred eighty-nine".