311093985 has 16 divisors (see below), whose sum is σ = 497974464. Its totient is φ = 165842112.

The previous prime is 311093977. The next prime is 311094001. The reversal of 311093985 is 589390113.

It is not a de Polignac number, because 311093985 - 2³ = 311093977 is a prime.

It is a Curzon number.

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, 51799 + ... + 57491.

It is an arithmetic number, because the mean of its divisors is an integer number (31123404).

Almost surely, 2^311093985 is an apocalyptic number.

It is an amenable number.

311093985 is a deficient number, since it is larger than the sum of its proper divisors (186880479).

311093985 is a wasteful number, since it uses less digits than its factorization.

311093985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9344.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 311093985 is about 17637.8565874655. The cubic root of 311093985 is about 677.5851374696.

The spelling of 311093985 in words is "three hundred eleven million, ninety-three thousand, nine hundred eighty-five".