23155351 has 4 divisors (see below), whose sum is σ = 23265304. Its totient is φ = 23045400.

The previous prime is 23155337. The next prime is 23155367. The reversal of 23155351 is 15355132.

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

It is a cyclic number.

It is not a de Polignac number, because 23155351 - 2¹⁷ = 23024279 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 (23155331) 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, 54660 + ... + 55081.

It is an arithmetic number, because the mean of its divisors is an integer number (5816326).

Almost surely, 2^23155351 is an apocalyptic number.

23155351 is a deficient number, since it is larger than the sum of its proper divisors (109953).

23155351 is a wasteful number, since it uses less digits than its factorization.

23155351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109952.

The product of its digits is 2250, while the sum is 25.

The square root of 23155351 is about 4812.0007273482. Note that the first 3 decimals coincide. The cubic root of 23155351 is about 285.0255481355.

The spelling of 23155351 in words is "twenty-three million, one hundred fifty-five thousand, three hundred fifty-one".