23431044 has 96 divisors (see below), whose sum is σ = 68992000. Its totient is φ = 6023808.

The previous prime is 23431021. The next prime is 23431061. The reversal of 23431044 is 44013432.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 23431044.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 46707 + ... + 47205.

Almost surely, 2^23431044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23431044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34496000).

23431044 is an abundant number, since it is smaller than the sum of its proper divisors (45560956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23431044 is a wasteful number, since it uses less digits than its factorization.

23431044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 23431044 is about 4840.5623640234. The cubic root of 23431044 is about 286.1522816914.

Adding to 23431044 its reverse (44013432), we get a palindrome (67444476).

The spelling of 23431044 in words is "twenty-three million, four hundred thirty-one thousand, forty-four".