23401431 has 12 divisors (see below), whose sum is σ = 33883200. Its totient is φ = 15563520.

The previous prime is 23401379. The next prime is 23401451. The reversal of 23401431 is 13410432.

23401431 is a `hidden beast` number, since 234 + 0 + 1 + 431 = 666.

It is not a de Polignac number, because 23401431 - 2⁷ = 23401303 is a prime.

It is a super-2 number, since 2×23401431² = 1095253945695522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23401451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1146 + ... + 6936.

It is an arithmetic number, because the mean of its divisors is an integer number (2823600).

Almost surely, 2^23401431 is an apocalyptic number.

23401431 is a deficient number, since it is larger than the sum of its proper divisors (10481769).

23401431 is a wasteful number, since it uses less digits than its factorization.

23401431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6246 (or 6243 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 23401431 is about 4837.5025581389. The cubic root of 23401431 is about 286.0316810064.

Adding to 23401431 its reverse (13410432), we get a palindrome (36811863).

Subtracting from 23401431 its reverse (13410432), we obtain a palindrome (9990999).

It can be divided in two parts, 23401 and 431, that added together give a palindrome (23832).

The spelling of 23401431 in words is "twenty-three million, four hundred one thousand, four hundred thirty-one".