1322115340 has 96 divisors (see below), whose sum is σ = 3425264640. Its totient is φ = 417436416.

The previous prime is 1322115317. The next prime is 1322115341. The reversal of 1322115340 is 435112231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1322115341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1344489 + ... + 1345471.

It is an arithmetic number, because the mean of its divisors is an integer number (35679840).

Almost surely, 2^1322115340 is an apocalyptic number.

1322115340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1322115340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1712632320).

1322115340 is an abundant number, since it is smaller than the sum of its proper divisors (2103149300).

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

1322115340 is a wasteful number, since it uses less digits than its factorization.

1322115340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751 (or 1749 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1322115340 is about 36360.9040041636. The cubic root of 1322115340 is about 1097.5469689998.

Adding to 1322115340 its reverse (435112231), we get a palindrome (1757227571).

It can be divided in two parts, 13221 and 15340, that added together give a 4-th power (28561 = 13⁴).

The spelling of 1322115340 in words is "one billion, three hundred twenty-two million, one hundred fifteen thousand, three hundred forty".