320152213 has 4 divisors (see below), whose sum is σ = 320369868. Its totient is φ = 319934560.

The previous prime is 320152169. The next prime is 320152219. The reversal of 320152213 is 312251023.

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 100460529 + 219691684 = 10023^2 + 14822^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320152213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320152219) 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, 106606 + ... + 109567.

It is an arithmetic number, because the mean of its divisors is an integer number (80092467).

Almost surely, 2^320152213 is an apocalyptic number.

It is an amenable number.

320152213 is a deficient number, since it is larger than the sum of its proper divisors (217655).

320152213 is a wasteful number, since it uses less digits than its factorization.

320152213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217654.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 320152213 is about 17892.7977968791. The cubic root of 320152213 is about 684.0988117169.

The spelling of 320152213 in words is "three hundred twenty million, one hundred fifty-two thousand, two hundred thirteen".