320871293 has 2 divisors, whose sum is σ = 320871294. Its totient is φ = 320871292.

The previous prime is 320871263. The next prime is 320871301. The reversal of 320871293 is 392178023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194825764 + 126045529 = 13958^2 + 11227^2 .

It is a cyclic number.

It is not a de Polignac number, because 320871293 - 2¹⁴ = 320854909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320871233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160435646 + 160435647.

It is an arithmetic number, because the mean of its divisors is an integer number (160435647).

Almost surely, 2^320871293 is an apocalyptic number.

It is an amenable number.

320871293 is a deficient number, since it is larger than the sum of its proper divisors (1).

320871293 is an equidigital number, since it uses as much as digits as its factorization.

320871293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 320871293 is about 17912.8806449437. The cubic root of 320871293 is about 684.6106036268.

The spelling of 320871293 in words is "three hundred twenty million, eight hundred seventy-one thousand, two hundred ninety-three".