1311204344 has 16 divisors (see below), whose sum is σ = 2461039200. Its totient is φ = 654927232.

The previous prime is 1311204329. The next prime is 1311204359. The reversal of 1311204344 is 4434021131.

It is an interprime number because it is at equal distance from previous prime (1311204329) and next prime (1311204359).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 76064 + ... + 91695.

It is an arithmetic number, because the mean of its divisors is an integer number (153814950).

Almost surely, 2^1311204344 is an apocalyptic number.

It is an amenable number.

1311204344 is a deficient number, since it is larger than the sum of its proper divisors (1149834856).

1311204344 is a wasteful number, since it uses less digits than its factorization.

1311204344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168742 (or 168738 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1311204344 is about 36210.5556985805. Note that the first 3 decimals coincide. The cubic root of 1311204344 is about 1094.5193901497.

Adding to 1311204344 its reverse (4434021131), we get a palindrome (5745225475).

The spelling of 1311204344 in words is "one billion, three hundred eleven million, two hundred four thousand, three hundred forty-four".