23142891 has 8 divisors (see below), whose sum is σ = 30967360. Its totient is φ = 15373512.

The previous prime is 23142887. The next prime is 23142919. The reversal of 23142891 is 19824132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23142891 - 2² = 23142887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23142811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12781 + ... + 14478.

It is an arithmetic number, because the mean of its divisors is an integer number (3870920).

Almost surely, 2^23142891 is an apocalyptic number.

23142891 is a deficient number, since it is larger than the sum of its proper divisors (7824469).

23142891 is a wasteful number, since it uses less digits than its factorization.

23142891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27545.

The product of its digits is 3456, while the sum is 30.

The square root of 23142891 is about 4810.7058733620. The cubic root of 23142891 is about 284.9744144468.

The spelling of 23142891 in words is "twenty-three million, one hundred forty-two thousand, eight hundred ninety-one".