320116513 has 2 divisors, whose sum is σ = 320116514. Its totient is φ = 320116512.

The previous prime is 320116487. The next prime is 320116519. The reversal of 320116513 is 315611023.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204833344 + 115283169 = 14312^2 + 10737^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320116513 is a prime.

It is not a weakly prime, because it can be changed into another prime (320116519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160058256 + 160058257.

It is an arithmetic number, because the mean of its divisors is an integer number (160058257).

Almost surely, 2^320116513 is an apocalyptic number.

It is an amenable number.

320116513 is a deficient number, since it is larger than the sum of its proper divisors (1).

320116513 is an equidigital number, since it uses as much as digits as its factorization.

320116513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 320116513 is about 17891.8001609676. The cubic root of 320116513 is about 684.0733829422.

Adding to 320116513 its reverse (315611023), we get a palindrome (635727536).

The spelling of 320116513 in words is "three hundred twenty million, one hundred sixteen thousand, five hundred thirteen".