231372223 has 4 divisors (see below), whose sum is σ = 231402688. Its totient is φ = 231341760.

The previous prime is 231372221. The next prime is 231372233. The reversal of 231372223 is 322273132.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 231372223 - 2¹ = 231372221 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 (231372221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6415 + ... + 22447.

It is an arithmetic number, because the mean of its divisors is an integer number (57850672).

Almost surely, 2^231372223 is an apocalyptic number.

231372223 is a deficient number, since it is larger than the sum of its proper divisors (30465).

231372223 is a wasteful number, since it uses less digits than its factorization.

231372223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30464.

The product of its digits is 3024, while the sum is 25.

The square root of 231372223 is about 15210.9244623724. The cubic root of 231372223 is about 613.9086317657.

Subtracting 231372223 from its reverse (322273132), we obtain a palindrome (90900909).

The spelling of 231372223 in words is "two hundred thirty-one million, three hundred seventy-two thousand, two hundred twenty-three".