23231655 has 24 divisors (see below), whose sum is σ = 40382160. Its totient is φ = 12355200.

The previous prime is 23231641. The next prime is 23231669. The reversal of 23231655 is 55613232.

23231655 is a `hidden beast` number, since 2 + 3 + 2 + 3 + 1 + 655 = 666.

It is an interprime number because it is at equal distance from previous prime (23231641) and next prime (23231669).

It is not a de Polignac number, because 23231655 - 2⁶ = 23231591 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26616 + ... + 27474.

It is an arithmetic number, because the mean of its divisors is an integer number (1682590).

Almost surely, 2^23231655 is an apocalyptic number.

23231655 is a deficient number, since it is larger than the sum of its proper divisors (17150505).

23231655 is a wasteful number, since it uses less digits than its factorization.

23231655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471 (or 1468 counting only the distinct ones).

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

The square root of 23231655 is about 4819.9227172228. The cubic root of 23231655 is about 285.3382871310.

Adding to 23231655 its reverse (55613232), we get a palindrome (78844887).

The spelling of 23231655 in words is "twenty-three million, two hundred thirty-one thousand, six hundred fifty-five".