1311126976 has 28 divisors (see below), whose sum is σ = 2634711520. Its totient is φ = 647262720.

The previous prime is 1311126959. The next prime is 1311126979. The reversal of 1311126976 is 6796211131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311126979) 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 3 ways as a sum of consecutive naturals, for example, 124605 + ... + 134716.

It is an arithmetic number, because the mean of its divisors is an integer number (94096840).

Almost surely, 2^1311126976 is an apocalyptic number.

1311126976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1311126976 is an abundant number, since it is smaller than the sum of its proper divisors (1323584544).

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

1311126976 is an equidigital number, since it uses as much as digits as its factorization.

1311126976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259412 (or 259402 counting only the distinct ones).

The product of its digits is 13608, while the sum is 37.

The square root of 1311126976 is about 36209.4873755484. The cubic root of 1311126976 is about 1094.4978622462.

The spelling of 1311126976 in words is "one billion, three hundred eleven million, one hundred twenty-six thousand, nine hundred seventy-six".