320403311313 has 16 divisors (see below), whose sum is σ = 434831333376. Its totient is φ = 209822054400.

The previous prime is 320403311303. The next prime is 320403311317. The reversal of 320403311313 is 313113304023.

It is a happy number.

It is not a de Polignac number, because 320403311313 - 2¹⁷ = 320403180241 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (320403311317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4124656 + ... + 4201617.

It is an arithmetic number, because the mean of its divisors is an integer number (27176958336).

Almost surely, 2^320403311313 is an apocalyptic number.

It is an amenable number.

320403311313 is a deficient number, since it is larger than the sum of its proper divisors (114428022063).

320403311313 is a wasteful number, since it uses less digits than its factorization.

320403311313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8326504.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 320403311313 its reverse (313113304023), we get a palindrome (633516615336).

The spelling of 320403311313 in words is "three hundred twenty billion, four hundred three million, three hundred eleven thousand, three hundred thirteen".