1311322449 has 32 divisors (see below), whose sum is σ = 1887390720. Its totient is φ = 807288768.

The previous prime is 1311322417. The next prime is 1311322469. The reversal of 1311322449 is 9442231131.

It is not a de Polignac number, because 1311322449 - 2⁵ = 1311322417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311322409) 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 31 ways as a sum of consecutive naturals, for example, 491092 + ... + 493754.

It is an arithmetic number, because the mean of its divisors is an integer number (58980960).

Almost surely, 2^1311322449 is an apocalyptic number.

1311322449 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1311322449 is a deficient number, since it is larger than the sum of its proper divisors (576068271).

1311322449 is a wasteful number, since it uses less digits than its factorization.

1311322449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2901.

The product of its digits is 5184, while the sum is 30.

The square root of 1311322449 is about 36212.1864708554. The cubic root of 1311322449 is about 1094.5522516260.

The spelling of 1311322449 in words is "one billion, three hundred eleven million, three hundred twenty-two thousand, four hundred forty-nine".