1311367499 has 12 divisors (see below), whose sum is σ = 1446803856. Its totient is φ = 1187645472.

The previous prime is 1311367459. The next prime is 1311367511. The reversal of 1311367499 is 9947631131.

It is not a de Polignac number, because 1311367499 - 2²⁰ = 1310318923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311367459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64247 + ... + 82160.

It is an arithmetic number, because the mean of its divisors is an integer number (120566988).

Almost surely, 2^1311367499 is an apocalyptic number.

1311367499 is a deficient number, since it is larger than the sum of its proper divisors (135436357).

1311367499 is a wasteful number, since it uses less digits than its factorization.

1311367499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146486 (or 146473 counting only the distinct ones).

The product of its digits is 122472, while the sum is 44.

The square root of 1311367499 is about 36212.8084936808. The cubic root of 1311367499 is about 1094.5647857957.

The spelling of 1311367499 in words is "one billion, three hundred eleven million, three hundred sixty-seven thousand, four hundred ninety-nine".