320521283 has 2 divisors, whose sum is σ = 320521284. Its totient is φ = 320521282.

The previous prime is 320521277. The next prime is 320521291. The reversal of 320521283 is 382125023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320521283 - 2⁶ = 320521219 is a prime.

It is not a weakly prime, because it can be changed into another prime (320521483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160260641 + 160260642.

It is an arithmetic number, because the mean of its divisors is an integer number (160260642).

Almost surely, 2^320521283 is an apocalyptic number.

320521283 is a deficient number, since it is larger than the sum of its proper divisors (1).

320521283 is an equidigital number, since it uses as much as digits as its factorization.

320521283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 320521283 is about 17903.1081938305. The cubic root of 320521283 is about 684.3615860899.

The spelling of 320521283 in words is "three hundred twenty million, five hundred twenty-one thousand, two hundred eighty-three".