23143995 has 64 divisors (see below), whose sum is σ = 49536000. Its totient is φ = 10015488.

The previous prime is 23143973. The next prime is 23143999. The reversal of 23143995 is 59934132.

It is a happy number.

It is not a de Polignac number, because 23143995 - 2⁵ = 23143963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23143999) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17311 + ... + 18599.

It is an arithmetic number, because the mean of its divisors is an integer number (774000).

Almost surely, 2^23143995 is an apocalyptic number.

23143995 is an abundant number, since it is smaller than the sum of its proper divisors (26392005).

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

23143995 is a wasteful number, since it uses less digits than its factorization.

23143995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 1323 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 23143995 is about 4810.8206160696. The cubic root of 23143995 is about 284.9789458131.

The spelling of 23143995 in words is "twenty-three million, one hundred forty-three thousand, nine hundred ninety-five".