1311131329 has 8 divisors (see below), whose sum is σ = 1369734912. Its totient is φ = 1253547120.

The previous prime is 1311131303. The next prime is 1311131387. The reversal of 1311131329 is 9231311131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311131329 - 2¹³ = 1311123137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311131389) 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 7 ways as a sum of consecutive naturals, for example, 252214 + ... + 257359.

It is an arithmetic number, because the mean of its divisors is an integer number (171216864).

Almost surely, 2^1311131329 is an apocalyptic number.

It is an amenable number.

1311131329 is a deficient number, since it is larger than the sum of its proper divisors (58603583).

1311131329 is an equidigital number, since it uses as much as digits as its factorization.

1311131329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509687.

The product of its digits is 486, while the sum is 25.

The square root of 1311131329 is about 36209.5474840545. The cubic root of 1311131329 is about 1094.4990735054.

The spelling of 1311131329 in words is "one billion, three hundred eleven million, one hundred thirty-one thousand, three hundred twenty-nine".