22263231 has 24 divisors (see below), whose sum is σ = 31936944. Its totient is φ = 13789440.

The previous prime is 22263223. The next prime is 22263259. The reversal of 22263231 is 13236222.

It is not a de Polignac number, because 22263231 - 2³ = 22263223 is a prime.

It is a super-2 number, since 2×22263231² = 991302909118722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22263198 and 22263207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22263221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65895 + ... + 66231.

It is an arithmetic number, because the mean of its divisors is an integer number (1330706).

Almost surely, 2^22263231 is an apocalyptic number.

22263231 is a deficient number, since it is larger than the sum of its proper divisors (9673713).

22263231 is a wasteful number, since it uses less digits than its factorization.

22263231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 420 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 22263231 is about 4718.3928407881. The cubic root of 22263231 is about 281.3170562086.

Adding to 22263231 its reverse (13236222), we get a palindrome (35499453).

The spelling of 22263231 in words is "twenty-two million, two hundred sixty-three thousand, two hundred thirty-one".