1311383585 has 16 divisors (see below), whose sum is σ = 1590528000. Its totient is φ = 1037909376.

The previous prime is 1311383569. The next prime is 1311383597. The reversal of 1311383585 is 5853831131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1311383585 - 2⁴ = 1311383569 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237941 + ... + 243389.

It is an arithmetic number, because the mean of its divisors is an integer number (99408000).

Almost surely, 2^1311383585 is an apocalyptic number.

It is an amenable number.

1311383585 is a deficient number, since it is larger than the sum of its proper divisors (279144415).

1311383585 is a wasteful number, since it uses less digits than its factorization.

1311383585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5960.

The product of its digits is 43200, while the sum is 38.

The square root of 1311383585 is about 36213.0305967341. The cubic root of 1311383585 is about 1094.5692613011.

The spelling of 1311383585 in words is "one billion, three hundred eleven million, three hundred eighty-three thousand, five hundred eighty-five".