23120571 has 4 divisors (see below), whose sum is σ = 30827432. Its totient is φ = 15413712.

The previous prime is 23120557. The next prime is 23120599. The reversal of 23120571 is 17502132.

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

It is not a de Polignac number, because 23120571 - 2⁷ = 23120443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23120501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3853426 + ... + 3853431.

It is an arithmetic number, because the mean of its divisors is an integer number (7706858).

Almost surely, 2^23120571 is an apocalyptic number.

23120571 is a deficient number, since it is larger than the sum of its proper divisors (7706861).

23120571 is an equidigital number, since it uses as much as digits as its factorization.

23120571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7706860.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 23120571 is about 4808.3854878743. The cubic root of 23120571 is about 284.8827711159.

It can be divided in two parts, 231 and 20571, that added together give a palindrome (20802).

The spelling of 23120571 in words is "twenty-three million, one hundred twenty thousand, five hundred seventy-one".