23431528 has 16 divisors (see below), whose sum is σ = 43992000. Its totient is φ = 11700336.

The previous prime is 23431523. The next prime is 23431531. The reversal of 23431528 is 82513432.

It is a junction number, because it is equal to n+sod(n) for n = 23431496 and 23431505.

It is not an unprimeable number, because it can be changed into a prime (23431523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6903 + ... + 9721.

It is an arithmetic number, because the mean of its divisors is an integer number (2749500).

Almost surely, 2^23431528 is an apocalyptic number.

It is an amenable number.

23431528 is a deficient number, since it is larger than the sum of its proper divisors (20560472).

23431528 is a wasteful number, since it uses less digits than its factorization.

23431528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864 (or 3860 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 23431528 is about 4840.6123579564. The cubic root of 23431528 is about 286.1542519657.

The spelling of 23431528 in words is "twenty-three million, four hundred thirty-one thousand, five hundred twenty-eight".