1322303220 has 108 divisors (see below), whose sum is σ = 4665872484. Its totient is φ = 302238720.

The previous prime is 1322303209. The next prime is 1322303237. The reversal of 1322303220 is 223032231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 597509136 + 724794084 = 24444^2 + 26922^2 .

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 = 1322303193 and 1322303202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 66141 + ... + 83780.

It is an arithmetic number, because the mean of its divisors is an integer number (43202523).

Almost surely, 2^1322303220 is an apocalyptic number.

1322303220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322303220 is an abundant number, since it is smaller than the sum of its proper divisors (3343569264).

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

1322303220 is a wasteful number, since it uses less digits than its factorization.

1322303220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149950 (or 149938 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 1322303220 is about 36363.4874565133. The cubic root of 1322303220 is about 1097.5989557293.

Adding to 1322303220 its reverse (223032231), we get a palindrome (1545335451).

The spelling of 1322303220 in words is "one billion, three hundred twenty-two million, three hundred three thousand, two hundred twenty".