23012431 has 4 divisors (see below), whose sum is σ = 24782632. Its totient is φ = 21242232.

The previous prime is 23012411. The next prime is 23012453. The reversal of 23012431 is 13421032.

It is a happy number.

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 23012431 - 2⁷ = 23012303 is a prime.

It is a super-2 number, since 2×23012431² = 1059143961059522, 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 (23012411) 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, 885081 + ... + 885106.

It is an arithmetic number, because the mean of its divisors is an integer number (6195658).

Almost surely, 2^23012431 is an apocalyptic number.

23012431 is a deficient number, since it is larger than the sum of its proper divisors (1770201).

23012431 is a wasteful number, since it uses less digits than its factorization.

23012431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770200.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 23012431 is about 4797.1273695828. The cubic root of 23012431 is about 284.4379237001.

Adding to 23012431 its reverse (13421032), we get a palindrome (36433463).

The spelling of 23012431 in words is "twenty-three million, twelve thousand, four hundred thirty-one".