23155347 has 4 divisors (see below), whose sum is σ = 30873800. Its totient is φ = 15436896.

The previous prime is 23155337. The next prime is 23155367. The reversal of 23155347 is 74355132.

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

It is not a de Polignac number, because 23155347 - 2⁴ = 23155331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23155337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3859222 + ... + 3859227.

It is an arithmetic number, because the mean of its divisors is an integer number (7718450).

Almost surely, 2^23155347 is an apocalyptic number.

23155347 is a deficient number, since it is larger than the sum of its proper divisors (7718453).

23155347 is an equidigital number, since it uses as much as digits as its factorization.

23155347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7718452.

The product of its digits is 12600, while the sum is 30.

The square root of 23155347 is about 4812.0003117207. Note that the first 3 decimals coincide. The cubic root of 23155347 is about 285.0255317231.

The spelling of 23155347 in words is "twenty-three million, one hundred fifty-five thousand, three hundred forty-seven".