231332222 has 8 divisors (see below), whose sum is σ = 378543672. Its totient is φ = 105151000.

The previous prime is 231332197. The next prime is 231332237. The reversal of 231332222 is 222233132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 231332194 and 231332203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5257529 + ... + 5257572.

It is an arithmetic number, because the mean of its divisors is an integer number (47317959).

Almost surely, 2^231332222 is an apocalyptic number.

231332222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231332222 is a deficient number, since it is larger than the sum of its proper divisors (147211450).

231332222 is a wasteful number, since it uses less digits than its factorization.

231332222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10515114.

The product of its digits is 864, while the sum is 20.

The square root of 231332222 is about 15209.6095281897. The cubic root of 231332222 is about 613.8732510069.

Adding to 231332222 its reverse (222233132), we get a palindrome (453565354).

The spelling of 231332222 in words is "two hundred thirty-one million, three hundred thirty-two thousand, two hundred twenty-two".