320513051 has 2 divisors, whose sum is σ = 320513052. Its totient is φ = 320513050.

The previous prime is 320513047. The next prime is 320513077. The reversal of 320513051 is 150315023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320513051 - 2² = 320513047 is a prime.

It is a super-2 number, since 2×320513051² = 205457231722657202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320513021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160256525 + 160256526.

It is an arithmetic number, because the mean of its divisors is an integer number (160256526).

Almost surely, 2^320513051 is an apocalyptic number.

320513051 is a deficient number, since it is larger than the sum of its proper divisors (1).

320513051 is an equidigital number, since it uses as much as digits as its factorization.

320513051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 320513051 is about 17902.8782881413. The cubic root of 320513051 is about 684.3557271833.

Adding to 320513051 its reverse (150315023), we get a palindrome (470828074).

The spelling of 320513051 in words is "three hundred twenty million, five hundred thirteen thousand, fifty-one".