320279851 has 2 divisors, whose sum is σ = 320279852. Its totient is φ = 320279850.

The previous prime is 320279803. The next prime is 320279863. The reversal of 320279851 is 158972023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320279851 - 2⁷ = 320279723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320279851.

It is not a weakly prime, because it can be changed into another prime (320279801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160139925 + 160139926.

It is an arithmetic number, because the mean of its divisors is an integer number (160139926).

Almost surely, 2^320279851 is an apocalyptic number.

320279851 is a deficient number, since it is larger than the sum of its proper divisors (1).

320279851 is an equidigital number, since it uses as much as digits as its factorization.

320279851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 320279851 is about 17896.3641838224. The cubic root of 320279851 is about 684.1897116069.

The spelling of 320279851 in words is "three hundred twenty million, two hundred seventy-nine thousand, eight hundred fifty-one".