23045431 has 4 divisors (see below), whose sum is σ = 23788864. Its totient is φ = 22302000.

The previous prime is 23045381. The next prime is 23045437. The reversal of 23045431 is 13454032.

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 23045431 - 2¹³ = 23037239 is a prime.

It is a super-2 number, since 2×23045431² = 1062183779951522, 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 (23045437) 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, 371670 + ... + 371731.

It is an arithmetic number, because the mean of its divisors is an integer number (5947216).

Almost surely, 2^23045431 is an apocalyptic number.

23045431 is a deficient number, since it is larger than the sum of its proper divisors (743433).

23045431 is an equidigital number, since it uses as much as digits as its factorization.

23045431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743432.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 23045431 is about 4800.5656958321. The cubic root of 23045431 is about 284.5738208058.

Adding to 23045431 its reverse (13454032), we get a palindrome (36499463).

The spelling of 23045431 in words is "twenty-three million, forty-five thousand, four hundred thirty-one".