1321244330 has 48 divisors (see below), whose sum is σ = 2774324520. Its totient is φ = 451721088.

The previous prime is 1321244299. The next prime is 1321244357. The reversal of 1321244330 is 334421231.

It can be written as a sum of positive squares in 4 ways, for example, as 1314280009 + 6964321 = 36253^2 + 2639^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1321244296 and 1321244305.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179156 + ... + 186384.

Almost surely, 2^1321244330 is an apocalyptic number.

1321244330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321244330 is an abundant number, since it is smaller than the sum of its proper divisors (1453080190).

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

1321244330 is a wasteful number, since it uses less digits than its factorization.

1321244330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7623 (or 7616 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1321244330 is about 36348.9247433813. The cubic root of 1321244330 is about 1097.3058946231.

Adding to 1321244330 its reverse (334421231), we get a palindrome (1655665561).

The spelling of 1321244330 in words is "one billion, three hundred twenty-one million, two hundred forty-four thousand, three hundred thirty".