320451013 has 2 divisors, whose sum is σ = 320451014. Its totient is φ = 320451012.

The previous prime is 320451011. The next prime is 320451023. The reversal of 320451013 is 310154023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233998209 + 86452804 = 15297^2 + 9298^2 .

It is a cyclic number.

It is not a de Polignac number, because 320451013 - 2¹ = 320451011 is a prime.

Together with 320451011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320451011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160225506 + 160225507.

It is an arithmetic number, because the mean of its divisors is an integer number (160225507).

Almost surely, 2^320451013 is an apocalyptic number.

It is an amenable number.

320451013 is a deficient number, since it is larger than the sum of its proper divisors (1).

320451013 is an equidigital number, since it uses as much as digits as its factorization.

320451013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 320451013 is about 17901.1455778674. The cubic root of 320451013 is about 684.3115700629.

The spelling of 320451013 in words is "three hundred twenty million, four hundred fifty-one thousand, thirteen".