1323431222 has 8 divisors (see below), whose sum is σ = 1990331136. Its totient is φ = 659987512.

The previous prime is 1323431203. The next prime is 1323431227. The reversal of 1323431222 is 2221343231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323431227) 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, 863093 + ... + 864624.

It is an arithmetic number, because the mean of its divisors is an integer number (248791392).

Almost surely, 2^1323431222 is an apocalyptic number.

1323431222 is a deficient number, since it is larger than the sum of its proper divisors (666899914).

1323431222 is a wasteful number, since it uses less digits than its factorization.

1323431222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728102.

The product of its digits is 1728, while the sum is 23.

The square root of 1323431222 is about 36378.9942411826. The cubic root of 1323431222 is about 1097.9109723958.

Adding to 1323431222 its reverse (2221343231), we get a palindrome (3544774453).

The spelling of 1323431222 in words is "one billion, three hundred twenty-three million, four hundred thirty-one thousand, two hundred twenty-two".