231343222 has 8 divisors (see below), whose sum is σ = 378561672. Its totient is φ = 105156000.

The previous prime is 231343213. The next prime is 231343241. The reversal of 231343222 is 222343132.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 10515601 = 231343222 / (2 + 3 + 1 + 3 + 4 + 3 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 231343193 and 231343202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5257779 + ... + 5257822.

It is an arithmetic number, because the mean of its divisors is an integer number (47320209).

Almost surely, 2^231343222 is an apocalyptic number.

231343222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231343222 is a deficient number, since it is larger than the sum of its proper divisors (147218450).

231343222 is a wasteful number, since it uses less digits than its factorization.

231343222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10515614.

The product of its digits is 1728, while the sum is 22.

The square root of 231343222 is about 15209.9711373822. The cubic root of 231343222 is about 613.8829808789.

Adding to 231343222 its reverse (222343132), we get a palindrome (453686354).

The spelling of 231343222 in words is "two hundred thirty-one million, three hundred forty-three thousand, two hundred twenty-two".