23423151 has 4 divisors (see below), whose sum is σ = 31230872. Its totient is φ = 15615432.

The previous prime is 23423137. The next prime is 23423159. The reversal of 23423151 is 15132432.

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

It is a de Polignac number, because none of the positive numbers 2^k-23423151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23423159) 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, 3903856 + ... + 3903861.

It is an arithmetic number, because the mean of its divisors is an integer number (7807718).

Almost surely, 2^23423151 is an apocalyptic number.

23423151 is a deficient number, since it is larger than the sum of its proper divisors (7807721).

23423151 is an equidigital number, since it uses as much as digits as its factorization.

23423151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7807720.

The product of its digits is 720, while the sum is 21.

The square root of 23423151 is about 4839.7469975196. The cubic root of 23423151 is about 286.1201469216.

Adding to 23423151 its reverse (15132432), we get a palindrome (38555583).

The spelling of 23423151 in words is "twenty-three million, four hundred twenty-three thousand, one hundred fifty-one".