23431104 has 84 divisors (see below), whose sum is σ = 70728840. Its totient is φ = 7395840.

The previous prime is 23431103. The next prime is 23431127. The reversal of 23431104 is 40113432.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23431103) 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 11 ways as a sum of consecutive naturals, for example, 9874 + ... + 12014.

It is an arithmetic number, because the mean of its divisors is an integer number (842010).

Almost surely, 2^23431104 is an apocalyptic number.

23431104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23431104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35364420).

23431104 is an abundant number, since it is smaller than the sum of its proper divisors (47297736).

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

23431104 is a wasteful number, since it uses less digits than its factorization.

23431104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178 (or 2165 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 23431104 is about 4840.5685616465. The cubic root of 23431104 is about 286.1525259418.

Adding to 23431104 its reverse (40113432), we get a palindrome (63544536).

The spelling of 23431104 in words is "twenty-three million, four hundred thirty-one thousand, one hundred four".