23032431 has 20 divisors (see below), whose sum is σ = 34618584. Its totient is φ = 15260400.

The previous prime is 23032423. The next prime is 23032469. The reversal of 23032431 is 13423032.

23032431 is a `hidden beast` number, since 230 + 3 + 2 + 431 = 666.

It is not a de Polignac number, because 23032431 - 2³ = 23032423 is a prime.

It is a super-2 number, since 2×23032431² = 1060985755539522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23032421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13876 + ... + 15446.

Almost surely, 2^23032431 is an apocalyptic number.

23032431 is a deficient number, since it is larger than the sum of its proper divisors (11586153).

23032431 is a wasteful number, since it uses less digits than its factorization.

23032431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764 (or 1755 counting only the distinct ones).

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

The square root of 23032431 is about 4799.2114977359. The cubic root of 23032431 is about 284.5203010790.

Adding to 23032431 its reverse (13423032), we get a palindrome (36455463).

The spelling of 23032431 in words is "twenty-three million, thirty-two thousand, four hundred thirty-one".