1321347115 has 16 divisors (see below), whose sum is σ = 1820805120. Its totient is φ = 910401120.

The previous prime is 1321347109. The next prime is 1321347161. The reversal of 1321347115 is 5117431231.

It is not a de Polignac number, because 1321347115 - 2³ = 1321347107 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631179 + ... + 633268.

It is an arithmetic number, because the mean of its divisors is an integer number (113800320).

Almost surely, 2^1321347115 is an apocalyptic number.

1321347115 is a deficient number, since it is larger than the sum of its proper divisors (499458005).

1321347115 is a wasteful number, since it uses less digits than its factorization.

1321347115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264482.

The product of its digits is 2520, while the sum is 28.

The square root of 1321347115 is about 36350.3385816418. The cubic root of 1321347115 is about 1097.3343485230.

Adding to 1321347115 its reverse (5117431231), we get a palindrome (6438778346).

The spelling of 1321347115 in words is "one billion, three hundred twenty-one million, three hundred forty-seven thousand, one hundred fifteen".