23255531 has 8 divisors (see below), whose sum is σ = 25083744. Its totient is φ = 21432960.

The previous prime is 23255527. The next prime is 23255543. The reversal of 23255531 is 13555232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23255531 - 2² = 23255527 is a prime.

It is a super-2 number, since 2×23255531² = 1081639444183922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23255531.

It is not an unprimeable number, because it can be changed into a prime (23255581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11786 + ... + 13616.

It is an arithmetic number, because the mean of its divisors is an integer number (3135468).

Almost surely, 2^23255531 is an apocalyptic number.

23255531 is a deficient number, since it is larger than the sum of its proper divisors (1828213).

23255531 is a wasteful number, since it uses less digits than its factorization.

23255531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821.

The product of its digits is 4500, while the sum is 26.

The square root of 23255531 is about 4822.3988843728. The cubic root of 23255531 is about 285.4360044392.

The spelling of 23255531 in words is "twenty-three million, two hundred fifty-five thousand, five hundred thirty-one".