1311799377 has 16 divisors (see below), whose sum is σ = 1999450112. Its totient is φ = 749405520.

The previous prime is 1311799361. The next prime is 1311799393. The reversal of 1311799377 is 7739971131.

It is an interprime number because it is at equal distance from previous prime (1311799361) and next prime (1311799393).

It is not a de Polignac number, because 1311799377 - 2⁴ = 1311799361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311799397) by changing a digit.

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, 128802 + ... + 138612.

It is an arithmetic number, because the mean of its divisors is an integer number (124965632).

Almost surely, 2^1311799377 is an apocalyptic number.

It is an amenable number.

1311799377 is a deficient number, since it is larger than the sum of its proper divisors (687650735).

1311799377 is an equidigital number, since it uses as much as digits as its factorization.

1311799377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16188.

The product of its digits is 250047, while the sum is 48.

The square root of 1311799377 is about 36218.7710586651. The cubic root of 1311799377 is about 1094.6849317670.

The spelling of 1311799377 in words is "one billion, three hundred eleven million, seven hundred ninety-nine thousand, three hundred seventy-seven".