22267231 has 4 divisors (see below), whose sum is σ = 25448272. Its totient is φ = 19086192.

The previous prime is 22267159. The next prime is 22267241. The reversal of 22267231 is 13276222.

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 22267231 - 2⁷ = 22267103 is a prime.

It is a super-2 number, since 2×22267231² = 991659152814722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22267196 and 22267205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22267241) 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, 1590510 + ... + 1590523.

It is an arithmetic number, because the mean of its divisors is an integer number (6362068).

Almost surely, 2^22267231 is an apocalyptic number.

22267231 is a deficient number, since it is larger than the sum of its proper divisors (3181041).

22267231 is an equidigital number, since it uses as much as digits as its factorization.

22267231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3181040.

The product of its digits is 2016, while the sum is 25.

The square root of 22267231 is about 4718.8166948929. The cubic root of 22267231 is about 281.3339031319. Note that the first 3 decimals are identical.

The spelling of 22267231 in words is "twenty-two million, two hundred sixty-seven thousand, two hundred thirty-one".