23228971 has 4 divisors (see below), whose sum is σ = 24030000. Its totient is φ = 22427944.

The previous prime is 23228969. The next prime is 23228977. The reversal of 23228971 is 17982232.

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 23228971 - 2¹ = 23228969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23228977) 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, 400471 + ... + 400528.

It is an arithmetic number, because the mean of its divisors is an integer number (6007500).

Almost surely, 2^23228971 is an apocalyptic number.

23228971 is a deficient number, since it is larger than the sum of its proper divisors (801029).

23228971 is an equidigital number, since it uses as much as digits as its factorization.

23228971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801028.

The product of its digits is 12096, while the sum is 34.

The square root of 23228971 is about 4819.6442814797. The cubic root of 23228971 is about 285.3272981383.

The spelling of 23228971 in words is "twenty-three million, two hundred twenty-eight thousand, nine hundred seventy-one".