1319318399 has 8 divisors (see below), whose sum is σ = 1509454848. Its totient is φ = 1129597560.

The previous prime is 1319318381. The next prime is 1319318417. The reversal of 1319318399 is 9938139131.

It is an interprime number because it is at equal distance from previous prime (1319318381) and next prime (1319318417).

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

It is not a de Polignac number, because 1319318399 - 2¹² = 1319314303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1319338399) by changing a digit.

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, 97067 + ... + 109820.

It is an arithmetic number, because the mean of its divisors is an integer number (188681856).

Almost surely, 2^1319318399 is an apocalyptic number.

1319318399 is a deficient number, since it is larger than the sum of its proper divisors (190136449).

1319318399 is an equidigital number, since it uses as much as digits as its factorization.

1319318399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207805.

The product of its digits is 157464, while the sum is 47.

The square root of 1319318399 is about 36322.4228129127. The cubic root of 1319318399 is about 1096.7724673914.

The spelling of 1319318399 in words is "one billion, three hundred nineteen million, three hundred eighteen thousand, three hundred ninety-nine".