1313331222 has 32 divisors (see below), whose sum is σ = 3063168000. Its totient is φ = 375236904.

The previous prime is 1313331203. The next prime is 1313331263. The reversal of 1313331222 is 2221333131.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317022 + ... + 321137.

It is an arithmetic number, because the mean of its divisors is an integer number (95724000).

Almost surely, 2^1313331222 is an apocalyptic number.

1313331222 is an abundant number, since it is smaller than the sum of its proper divisors (1749836778).

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

1313331222 is an equidigital number, since it uses as much as digits as its factorization.

1313331222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638185 (or 638171 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 1313331222 is about 36239.9120032044. The cubic root of 1313331222 is about 1095.1108696981.

Adding to 1313331222 its reverse (2221333131), we get a palindrome (3534664353).

The spelling of 1313331222 in words is "one billion, three hundred thirteen million, three hundred thirty-one thousand, two hundred twenty-two".