1313223222 has 16 divisors (see below), whose sum is σ = 2631493872. Its totient is φ = 436899840.

The previous prime is 1313223221. The next prime is 1313223281. The reversal of 1313223222 is 2223223131.

It is a happy number.

It is a super-2 number, since 2×1313223222² = 3449110461600122568, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313223221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206923 + ... + 213174.

It is an arithmetic number, because the mean of its divisors is an integer number (164468367).

Almost surely, 2^1313223222 is an apocalyptic number.

1313223222 is an abundant number, since it is smaller than the sum of its proper divisors (1318270650).

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

1313223222 is a wasteful number, since it uses less digits than its factorization.

1313223222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420623.

The product of its digits is 864, while the sum is 21.

The square root of 1313223222 is about 36238.4219027264. The cubic root of 1313223222 is about 1095.0808505594.

Adding to 1313223222 its reverse (2223223131), we get a palindrome (3536446353).

Subtracting 1313223222 from its reverse (2223223131), we obtain a palindrome (909999909).

The spelling of 1313223222 in words is "one billion, three hundred thirteen million, two hundred twenty-three thousand, two hundred twenty-two".