23143120 has 240 divisors, whose sum is σ = 76745088. Its totient is φ = 6266880.

The previous prime is 23143111. The next prime is 23143151. The reversal of 23143120 is 2134132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 23143094 and 23143103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1361352 + ... + 1361368.

Almost surely, 2^23143120 is an apocalyptic number.

23143120 is a gapful number since it is divisible by the number (20) 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 23143120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38372544).

23143120 is an abundant number, since it is smaller than the sum of its proper divisors (53601968).

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

23143120 is a wasteful number, since it uses less digits than its factorization.

23143120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 23143120 is about 4810.7296743841. The cubic root of 23143120 is about 284.9753543888.

Adding to 23143120 its reverse (2134132), we get a palindrome (25277252).

The spelling of 23143120 in words is "twenty-three million, one hundred forty-three thousand, one hundred twenty".