320253331 has 2 divisors, whose sum is σ = 320253332. Its totient is φ = 320253330.

The previous prime is 320253319. The next prime is 320253397. The reversal of 320253331 is 133352023.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320253331 - 2¹³ = 320245139 is a prime.

It is a super-2 number, since 2×320253331² = 205124392033191122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320253431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160126665 + 160126666.

It is an arithmetic number, because the mean of its divisors is an integer number (160126666).

Almost surely, 2^320253331 is an apocalyptic number.

320253331 is a deficient number, since it is larger than the sum of its proper divisors (1).

320253331 is an equidigital number, since it uses as much as digits as its factorization.

320253331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 22.

The square root of 320253331 is about 17895.6232358641. The cubic root of 320253331 is about 684.1708268598.

The spelling of 320253331 in words is "three hundred twenty million, two hundred fifty-three thousand, three hundred thirty-one".