311089085 has 8 divisors (see below), whose sum is σ = 374696280. Its totient is φ = 247945024.

The previous prime is 311089073. The next prime is 311089091. The reversal of 311089085 is 580980113.

It can be written as a sum of positive squares in 4 ways, for example, as 34798201 + 276290884 = 5899^2 + 16622^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311089085 is a prime.

It is a super-2 number, since 2×311089085² = 193552837612274450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114302 + ... + 116991.

It is an arithmetic number, because the mean of its divisors is an integer number (46837035).

Almost surely, 2^311089085 is an apocalyptic number.

It is an amenable number.

311089085 is a deficient number, since it is larger than the sum of its proper divisors (63607195).

311089085 is a wasteful number, since it uses less digits than its factorization.

311089085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231567.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 311089085 is about 17637.7176811514. The cubic root of 311089085 is about 677.5815799332.

The spelling of 311089085 in words is "three hundred eleven million, eighty-nine thousand, eighty-five".