1311333222 has 48 divisors (see below), whose sum is σ = 2807281152. Its totient is φ = 408224880.

The previous prime is 1311333181. The next prime is 1311333227. The reversal of 1311333222 is 2223331131.

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 (1311333227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149523 + ... + 158049.

It is an arithmetic number, because the mean of its divisors is an integer number (58485024).

Almost surely, 2^1311333222 is an apocalyptic number.

1311333222 is an abundant number, since it is smaller than the sum of its proper divisors (1495947930).

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

1311333222 is a wasteful number, since it uses less digits than its factorization.

1311333222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8641 (or 8622 counting only the distinct ones).

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

The square root of 1311333222 is about 36212.3352188174. The cubic root of 1311333222 is about 1094.5552490019. Note that the first 3 decimals are identical.

Adding to 1311333222 its reverse (2223331131), we get a palindrome (3534664353).

The spelling of 1311333222 in words is "one billion, three hundred eleven million, three hundred thirty-three thousand, two hundred twenty-two".