231022223 has 2 divisors, whose sum is σ = 231022224. Its totient is φ = 231022222.

The previous prime is 231022217. The next prime is 231022243. The reversal of 231022223 is 322220132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231022223 - 2¹⁴ = 231005839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231022243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115511111 + 115511112.

It is an arithmetic number, because the mean of its divisors is an integer number (115511112).

Almost surely, 2^231022223 is an apocalyptic number.

231022223 is a deficient number, since it is larger than the sum of its proper divisors (1).

231022223 is an equidigital number, since it uses as much as digits as its factorization.

231022223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 231022223 is about 15199.4152190142. The cubic root of 231022223 is about 613.5989194847.

Adding to 231022223 its reverse (322220132), we get a palindrome (553242355).

The spelling of 231022223 in words is "two hundred thirty-one million, twenty-two thousand, two hundred twenty-three".