235631223 has 12 divisors (see below), whose sum is σ = 348658128. Its totient is φ = 153255840.

The previous prime is 235631219. The next prime is 235631233. The reversal of 235631223 is 322136532.

235631223 is a `hidden beast` number, since 2 + 3 + 5 + 631 + 2 + 23 = 666.

It is not a de Polignac number, because 235631223 - 2² = 235631219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235631233) 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, 318915 + ... + 319652.

It is an arithmetic number, because the mean of its divisors is an integer number (29054844).

Almost surely, 2^235631223 is an apocalyptic number.

235631223 is a deficient number, since it is larger than the sum of its proper divisors (113026905).

235631223 is a wasteful number, since it uses less digits than its factorization.

235631223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638614 (or 638611 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 235631223 is about 15350.2841341781. The cubic root of 235631223 is about 617.6526074107.

Adding to 235631223 its reverse (322136532), we get a palindrome (557767755).

The spelling of 235631223 in words is "two hundred thirty-five million, six hundred thirty-one thousand, two hundred twenty-three".