23227431 has 4 divisors (see below), whose sum is σ = 30969912. Its totient is φ = 15484952.

The previous prime is 23227387. The next prime is 23227433. The reversal of 23227431 is 13472232.

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 23227431 - 2²¹ = 21130279 is a prime.

It is a super-2 number, since 2×23227431² = 1079027101719522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23227433) 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, 3871236 + ... + 3871241.

It is an arithmetic number, because the mean of its divisors is an integer number (7742478).

Almost surely, 2^23227431 is an apocalyptic number.

23227431 is a deficient number, since it is larger than the sum of its proper divisors (7742481).

23227431 is an equidigital number, since it uses as much as digits as its factorization.

23227431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7742480.

The product of its digits is 2016, while the sum is 24.

The square root of 23227431 is about 4819.4845160038. The cubic root of 23227431 is about 285.3209925964.

Adding to 23227431 its reverse (13472232), we get a palindrome (36699663).

The spelling of 23227431 in words is "twenty-three million, two hundred twenty-seven thousand, four hundred thirty-one".