23403231 has 12 divisors (see below), whose sum is σ = 35584120. Its totient is φ = 14780880.

The previous prime is 23403209. The next prime is 23403239. The reversal of 23403231 is 13230432.

23403231 is a `hidden beast` number, since 2 + 340 + 323 + 1 = 666.

It is not a de Polignac number, because 23403231 - 2¹⁰ = 23402207 is a prime.

It is a super-2 number, since 2×23403231² = 1095422442478722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23403239) 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, 68260 + ... + 68601.

Almost surely, 2^23403231 is an apocalyptic number.

23403231 is a deficient number, since it is larger than the sum of its proper divisors (12180889).

23403231 is a wasteful number, since it uses less digits than its factorization.

23403231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136886 (or 136883 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 23403231 is about 4837.6886009746. The cubic root of 23403231 is about 286.0390145156.

Adding to 23403231 its reverse (13230432), we get a palindrome (36633663).

The spelling of 23403231 in words is "twenty-three million, four hundred three thousand, two hundred thirty-one".