1311130344 has 32 divisors (see below), whose sum is σ = 3278751840. Its totient is φ = 436920000.

The previous prime is 1311130277. The next prime is 1311130357. The reversal of 1311130344 is 4430311131.

It is a self number, because there is not a number n which added to its sum of digits gives 1311130344.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 127059 + ... + 136989.

It is an arithmetic number, because the mean of its divisors is an integer number (102460995).

Almost surely, 2^1311130344 is an apocalyptic number.

It is an amenable number.

1311130344 is an abundant number, since it is smaller than the sum of its proper divisors (1967621496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311130344 is a wasteful number, since it uses less digits than its factorization.

1311130344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15441 (or 15437 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1311130344 is about 36209.5338826669. The cubic root of 1311130344 is about 1094.4987994210.

Adding to 1311130344 its reverse (4430311131), we get a palindrome (5741441475).

The spelling of 1311130344 in words is "one billion, three hundred eleven million, one hundred thirty thousand, three hundred forty-four".