320112985 has 4 divisors (see below), whose sum is σ = 384135588. Its totient is φ = 256090384.

The previous prime is 320112973. The next prime is 320113021. The reversal of 320112985 is 589211023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589211023 = 3461 ⋅170243.

It can be written as a sum of positive squares in 2 ways, for example, as 56505289 + 263607696 = 7517^2 + 16236^2 .

It is a cyclic number.

It is not a de Polignac number, because 320112985 - 2⁷ = 320112857 is a prime.

It is a super-2 number, since 2×320112985² = 204944646331220450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32011294 + ... + 32011303.

It is an arithmetic number, because the mean of its divisors is an integer number (96033897).

Almost surely, 2^320112985 is an apocalyptic number.

It is an amenable number.

320112985 is a deficient number, since it is larger than the sum of its proper divisors (64022603).

320112985 is an equidigital number, since it uses as much as digits as its factorization.

320112985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64022602.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 320112985 is about 17891.7015680454. The cubic root of 320112985 is about 684.0708698783.

The spelling of 320112985 in words is "three hundred twenty million, one hundred twelve thousand, nine hundred eighty-five".