320212117 has 4 divisors (see below), whose sum is σ = 323382636. Its totient is φ = 317041600.

The previous prime is 320212103. The next prime is 320212127. The reversal of 320212117 is 711212023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 291760561 + 28451556 = 17081^2 + 5334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320212117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320212094 and 320212103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320212127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585108 + ... + 1585309.

It is an arithmetic number, because the mean of its divisors is an integer number (80845659).

Almost surely, 2^320212117 is an apocalyptic number.

It is an amenable number.

320212117 is a deficient number, since it is larger than the sum of its proper divisors (3170519).

320212117 is a wasteful number, since it uses less digits than its factorization.

320212117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3170518.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 320212117 is about 17894.4716882058. The cubic root of 320212117 is about 684.1414765264.

The spelling of 320212117 in words is "three hundred twenty million, two hundred twelve thousand, one hundred seventeen".