320212979 has 2 divisors, whose sum is σ = 320212980. Its totient is φ = 320212978.

The previous prime is 320212957. The next prime is 320212987. The reversal of 320212979 is 979212023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320212979 - 2²⁰ = 319164403 is a prime.

It is not a weakly prime, because it can be changed into another prime (320212579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160106489 + 160106490.

It is an arithmetic number, because the mean of its divisors is an integer number (160106490).

Almost surely, 2^320212979 is an apocalyptic number.

320212979 is a deficient number, since it is larger than the sum of its proper divisors (1).

320212979 is an equidigital number, since it uses as much as digits as its factorization.

320212979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 320212979 is about 17894.4957738406. The cubic root of 320212979 is about 684.1420904209.

The spelling of 320212979 in words is "three hundred twenty million, two hundred twelve thousand, nine hundred seventy-nine".