1303311222 has 80 divisors (see below), whose sum is σ = 3158274240. Its totient is φ = 400142592.

The previous prime is 1303311167. The next prime is 1303311227. The reversal of 1303311222 is 2221133031.

1303311222 is a `hidden beast` number, since 130 + 3 + 311 + 222 = 666.

It is a super-2 number, since 2×1303311222² = 3397240282782266568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1303311195 and 1303311204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303311227) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 124404 + ... + 134472.

It is an arithmetic number, because the mean of its divisors is an integer number (39478428).

Almost surely, 2^1303311222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1303311222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1579137120).

1303311222 is an abundant number, since it is smaller than the sum of its proper divisors (1854963018).

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

1303311222 is a wasteful number, since it uses less digits than its factorization.

1303311222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10147 (or 10138 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1303311222 is about 36101.4019395369. The cubic root of 1303311222 is about 1092.3187241362.

Adding to 1303311222 its reverse (2221133031), we get a palindrome (3524444253).

The spelling of 1303311222 in words is "one billion, three hundred three million, three hundred eleven thousand, two hundred twenty-two".