23123951 has 4 divisors (see below), whose sum is σ = 23156232. Its totient is φ = 23091672.

The previous prime is 23123939. The next prime is 23123957. The reversal of 23123951 is 15932132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23123951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23123951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15041 + ... + 16506.

It is an arithmetic number, because the mean of its divisors is an integer number (5789058).

Almost surely, 2^23123951 is an apocalyptic number.

23123951 is a deficient number, since it is larger than the sum of its proper divisors (32281).

23123951 is an equidigital number, since it uses as much as digits as its factorization.

23123951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32280.

The product of its digits is 1620, while the sum is 26.

The square root of 23123951 is about 4808.7369443545. The cubic root of 23123951 is about 284.8966527923.

The spelling of 23123951 in words is "twenty-three million, one hundred twenty-three thousand, nine hundred fifty-one".