1320318285 has 64 divisors (see below), whose sum is σ = 2542530816. Its totient is φ = 576460800.

The previous prime is 1320318283. The next prime is 1320318299. The reversal of 1320318285 is 5828130231.

It is not a de Polignac number, because 1320318285 - 2¹ = 1320318283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320318283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 80439 + ... + 95451.

It is an arithmetic number, because the mean of its divisors is an integer number (39727044).

Almost surely, 2^1320318285 is an apocalyptic number.

1320318285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1320318285 is a deficient number, since it is larger than the sum of its proper divisors (1222212531).

1320318285 is a wasteful number, since it uses less digits than its factorization.

1320318285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15086.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1320318285 is about 36336.1842383044. The cubic root of 1320318285 is about 1097.0494716663.

The spelling of 1320318285 in words is "one billion, three hundred twenty million, three hundred eighteen thousand, two hundred eighty-five".