23109144 has 32 divisors (see below), whose sum is σ = 58150320. Its totient is φ = 7652736.

The previous prime is 23109139. The next prime is 23109161. The reversal of 23109144 is 44190132.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702 + ... + 6834.

Almost surely, 2^23109144 is an apocalyptic number.

23109144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23109144 is an abundant number, since it is smaller than the sum of its proper divisors (35041176).

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

23109144 is a wasteful number, since it uses less digits than its factorization.

23109144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6299 (or 6295 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 23109144 is about 4807.1971043426. The cubic root of 23109144 is about 284.8358303509.

Adding to 23109144 its reverse (44190132), we get a palindrome (67299276).

The spelling of 23109144 in words is "twenty-three million, one hundred nine thousand, one hundred forty-four".