231252223 has 4 divisors (see below), whose sum is σ = 231318568. Its totient is φ = 231185880.

The previous prime is 231252209. The next prime is 231252239. The reversal of 231252223 is 322252132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231252223 - 2⁵ = 231252191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231252194 and 231252203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231252253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27636 + ... + 35017.

It is an arithmetic number, because the mean of its divisors is an integer number (57829642).

Almost surely, 2^231252223 is an apocalyptic number.

231252223 is a deficient number, since it is larger than the sum of its proper divisors (66345).

231252223 is an equidigital number, since it uses as much as digits as its factorization.

231252223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66344.

The product of its digits is 1440, while the sum is 22.

The square root of 231252223 is about 15206.9794173596. The cubic root of 231252223 is about 613.8024799057.

Subtracting 231252223 from its reverse (322252132), we obtain a palindrome (90999909).

The spelling of 231252223 in words is "two hundred thirty-one million, two hundred fifty-two thousand, two hundred twenty-three".