231423222 has 32 divisors (see below), whose sum is σ = 471536640. Its totient is φ = 75703040.

The previous prime is 231423221. The next prime is 231423223. The reversal of 231423222 is 222324132.

It is an interprime number because it is at equal distance from previous prime (231423221) and next prime (231423223).

It is a super-2 number, since 2×231423222² = 107113415361722568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231423221) 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, 100678 + ... + 102950.

It is an arithmetic number, because the mean of its divisors is an integer number (14735520).

Almost surely, 2^231423222 is an apocalyptic number.

231423222 is an abundant number, since it is smaller than the sum of its proper divisors (240113418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231423222 is a wasteful number, since it uses less digits than its factorization.

231423222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588.

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

The square root of 231423222 is about 15212.6007638405. The cubic root of 231423222 is about 613.9537343078.

Adding to 231423222 its reverse (222324132), we get a palindrome (453747354).

The spelling of 231423222 in words is "two hundred thirty-one million, four hundred twenty-three thousand, two hundred twenty-two".