23271155 has 4 divisors (see below), whose sum is σ = 27925392. Its totient is φ = 18616920.

The previous prime is 23271139. The next prime is 23271167. The reversal of 23271155 is 55117232.

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

It is not a de Polignac number, because 23271155 - 2⁴ = 23271139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2327111 + ... + 2327120.

It is an arithmetic number, because the mean of its divisors is an integer number (6981348).

Almost surely, 2^23271155 is an apocalyptic number.

23271155 is a deficient number, since it is larger than the sum of its proper divisors (4654237).

23271155 is an equidigital number, since it uses as much as digits as its factorization.

23271155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4654236.

The product of its digits is 2100, while the sum is 26.

The square root of 23271155 is about 4824.0185530323. The cubic root of 23271155 is about 285.4999125877.

Adding to 23271155 its reverse (55117232), we get a palindrome (78388387).

The spelling of 23271155 in words is "twenty-three million, two hundred seventy-one thousand, one hundred fifty-five".