231422223 has 16 divisors (see below), whose sum is σ = 335283200. Its totient is φ = 141445440.

The previous prime is 231422201. The next prime is 231422237. The reversal of 231422223 is 322224132.

It is not a de Polignac number, because 231422223 - 2¹⁸ = 231160079 is a prime.

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 231422223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231422293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63718 + ... + 67251.

It is an arithmetic number, because the mean of its divisors is an integer number (20955200).

Almost surely, 2^231422223 is an apocalyptic number.

231422223 is a deficient number, since it is larger than the sum of its proper divisors (103860977).

231422223 is a wasteful number, since it uses less digits than its factorization.

231422223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131022.

The product of its digits is 1152, while the sum is 21.

The square root of 231422223 is about 15212.5679291828. The cubic root of 231422223 is about 613.9528508749.

Adding to 231422223 its reverse (322224132), we get a palindrome (553646355).

The spelling of 231422223 in words is "two hundred thirty-one million, four hundred twenty-two thousand, two hundred twenty-three".