23400231 has 4 divisors (see below), whose sum is σ = 31200312. Its totient is φ = 15600152.

The previous prime is 23400203. The next prime is 23400239. The reversal of 23400231 is 13200432.

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 23400231 - 2⁷ = 23400103 is a prime.

It is a super-2 number, since 2×23400231² = 1095141621706722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23400231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23400239) 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, 3900036 + ... + 3900041.

It is an arithmetic number, because the mean of its divisors is an integer number (7800078).

Almost surely, 2^23400231 is an apocalyptic number.

23400231 is a deficient number, since it is larger than the sum of its proper divisors (7800081).

23400231 is an equidigital number, since it uses as much as digits as its factorization.

23400231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7800080.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23400231 is about 4837.3785256066. The cubic root of 23400231 is about 286.0267917914.

Adding to 23400231 its reverse (13200432), we get a palindrome (36600663).

The spelling of 23400231 in words is "twenty-three million, four hundred thousand, two hundred thirty-one".