320010403 has 2 divisors, whose sum is σ = 320010404. Its totient is φ = 320010402.

The previous prime is 320010347. The next prime is 320010413. The reversal of 320010403 is 304010023.

It is a strong prime.

It is an emirp because it is prime and its reverse (304010023) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320010403 is a prime.

It is not a weakly prime, because it can be changed into another prime (320010413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160005201 + 160005202.

It is an arithmetic number, because the mean of its divisors is an integer number (160005202).

Almost surely, 2^320010403 is an apocalyptic number.

320010403 is a deficient number, since it is larger than the sum of its proper divisors (1).

320010403 is an equidigital number, since it uses as much as digits as its factorization.

320010403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 320010403 is about 17888.8345903248. The cubic root of 320010403 is about 683.9977906236.

Adding to 320010403 its reverse (304010023), we get a palindrome (624020426).

The spelling of 320010403 in words is "three hundred twenty million, ten thousand, four hundred three".