1311734899 has 8 divisors (see below), whose sum is σ = 1355861888. Its totient is φ = 1267721280.

The previous prime is 1311734857. The next prime is 1311734927. The reversal of 1311734899 is 9984371131.

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 1311734899 - 2⁹ = 1311734387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311734999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4482 + ... + 51415.

It is an arithmetic number, because the mean of its divisors is an integer number (169482736).

Almost surely, 2^1311734899 is an apocalyptic number.

1311734899 is a deficient number, since it is larger than the sum of its proper divisors (44126989).

1311734899 is an equidigital number, since it uses as much as digits as its factorization.

1311734899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56685.

The product of its digits is 163296, while the sum is 46.

The square root of 1311734899 is about 36217.8809291764. The cubic root of 1311734899 is about 1094.6669960337. Note that the first 3 decimals are identical.

The spelling of 1311734899 in words is "one billion, three hundred eleven million, seven hundred thirty-four thousand, eight hundred ninety-nine".