23004531 has 24 divisors (see below), whose sum is σ = 37829376. Its totient is φ = 13334640.

The previous prime is 23004523. The next prime is 23004539. The reversal of 23004531 is 13540032.

It is an interprime number because it is at equal distance from previous prime (23004523) and next prime (23004539).

It is not a de Polignac number, because 23004531 - 2³ = 23004523 is a prime.

It is a super-2 number, since 2×23004531² = 1058416893059922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (18) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (23004539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2775 + ... + 7328.

It is an arithmetic number, because the mean of its divisors is an integer number (1576224).

Almost surely, 2^23004531 is an apocalyptic number.

23004531 is a deficient number, since it is larger than the sum of its proper divisors (14824845).

23004531 is a wasteful number, since it uses less digits than its factorization.

23004531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10143 (or 10140 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 23004531 is about 4796.3038894549. The cubic root of 23004531 is about 284.4053714855.

Adding to 23004531 its reverse (13540032), we get a palindrome (36544563).

The spelling of 23004531 in words is "twenty-three million, four thousand, five hundred thirty-one".