320753213 has 6 divisors (see below), whose sum is σ = 352563582. Its totient is φ = 291593720.

The previous prime is 320753183. The next prime is 320753261. The reversal of 320753213 is 312357023.

It can be written as a sum of positive squares in only one way, i.e., 297114169 + 23639044 = 17237^2 + 4862^2 .

It is not a de Polignac number, because 320753213 - 2⁶ = 320753149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320753273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1325306 + ... + 1325547.

It is an arithmetic number, because the mean of its divisors is an integer number (58760597).

Almost surely, 2^320753213 is an apocalyptic number.

It is an amenable number.

320753213 is a deficient number, since it is larger than the sum of its proper divisors (31810369).

320753213 is a wasteful number, since it uses less digits than its factorization.

320753213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650875 (or 2650864 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 320753213 is about 17909.5843893710. The cubic root of 320753213 is about 684.5266148749.

The spelling of 320753213 in words is "three hundred twenty million, seven hundred fifty-three thousand, two hundred thirteen".