23255631 has 12 divisors (see below), whose sum is σ = 38390352. Its totient is φ = 13288896.

The previous prime is 23255629. The next prime is 23255641. The reversal of 23255631 is 13655232.

23255631 is a `hidden beast` number, since 2 + 3 + 25 + 5 + 631 = 666.

It is not a de Polignac number, because 23255631 - 2¹ = 23255629 is a prime.

It is a super-2 number, since 2×23255631² = 1081648746416322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23255595 and 23255604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23255621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184506 + ... + 184631.

It is an arithmetic number, because the mean of its divisors is an integer number (3199196).

Almost surely, 2^23255631 is an apocalyptic number.

23255631 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23255631 is a deficient number, since it is larger than the sum of its proper divisors (15134721).

23255631 is a wasteful number, since it uses less digits than its factorization.

23255631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369150 (or 369147 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 23255631 is about 4822.4092526454. The cubic root of 23255631 is about 285.4364135685.

The spelling of 23255631 in words is "twenty-three million, two hundred fifty-five thousand, six hundred thirty-one".