1320131915 has 8 divisors (see below), whose sum is σ = 1584518208. Its totient is φ = 1055865600.

The previous prime is 1320131909. The next prime is 1320131921. The reversal of 1320131915 is 5191310231.

It is an interprime number because it is at equal distance from previous prime (1320131909) and next prime (1320131921).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1320131915 - 2¹⁰ = 1320130891 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3686 + ... + 51515.

It is an arithmetic number, because the mean of its divisors is an integer number (198064776).

Almost surely, 2^1320131915 is an apocalyptic number.

1320131915 is a deficient number, since it is larger than the sum of its proper divisors (264386293).

1320131915 is an equidigital number, since it uses as much as digits as its factorization.

1320131915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59989.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 1320131915 is about 36333.6196242543. The cubic root of 1320131915 is about 1096.9978511004.

The spelling of 1320131915 in words is "one billion, three hundred twenty million, one hundred thirty-one thousand, nine hundred fifteen".