320057213 has 32 divisors (see below), whose sum is σ = 395974656. Its totient is φ = 252762048.

The previous prime is 320057207. The next prime is 320057239. The reversal of 320057213 is 312750023.

It is not a de Polignac number, because 320057213 - 2⁶ = 320057149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320051213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 574331 + ... + 574887.

It is an arithmetic number, because the mean of its divisors is an integer number (12374208).

Almost surely, 2^320057213 is an apocalyptic number.

It is an amenable number.

320057213 is a deficient number, since it is larger than the sum of its proper divisors (75917443).

320057213 is a wasteful number, since it uses less digits than its factorization.

320057213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 320057213 is about 17890.1429004913. The cubic root of 320057213 is about 684.0311399306.

The spelling of 320057213 in words is "three hundred twenty million, fifty-seven thousand, two hundred thirteen".