231554223 has 6 divisors (see below), whose sum is σ = 334467224. Its totient is φ = 154369476.

The previous prime is 231554203. The next prime is 231554227. The reversal of 231554223 is 322455132.

It is a happy number.

231554223 is a `hidden beast` number, since 231 + 5 + 5 + 422 + 3 = 666.

It is not a de Polignac number, because 231554223 - 2¹² = 231550127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231554227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12864115 + ... + 12864132.

Almost surely, 2^231554223 is an apocalyptic number.

231554223 is a deficient number, since it is larger than the sum of its proper divisors (102913001).

231554223 is a wasteful number, since it uses less digits than its factorization.

231554223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25728253 (or 25728250 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 231554223 is about 15216.9058287156. The cubic root of 231554223 is about 614.0695587286.

Subtracting 231554223 from its reverse (322455132), we obtain a palindrome (90900909).

The spelling of 231554223 in words is "two hundred thirty-one million, five hundred fifty-four thousand, two hundred twenty-three".