320201913 has 4 divisors (see below), whose sum is σ = 426935888. Its totient is φ = 213467940.

The previous prime is 320201899. The next prime is 320201933. The reversal of 320201913 is 319102023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 320201913 - 2⁴ = 320201897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320201913.

It is not an unprimeable number, because it can be changed into a prime (320201933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53366983 + ... + 53366988.

It is an arithmetic number, because the mean of its divisors is an integer number (106733972).

Almost surely, 2^320201913 is an apocalyptic number.

It is an amenable number.

320201913 is a deficient number, since it is larger than the sum of its proper divisors (106733975).

320201913 is a wasteful number, since it uses less digits than its factorization.

320201913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106733974.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 320201913 is about 17894.1865699450. The cubic root of 320201913 is about 684.1342094125.

Adding to 320201913 its reverse (319102023), we get a palindrome (639303936).

It can be divided in two parts, 32020 and 1913, that added together give a palindrome (33933).

The spelling of 320201913 in words is "three hundred twenty million, two hundred one thousand, nine hundred thirteen".