320112013 has 4 divisors (see below), whose sum is σ = 344736028. Its totient is φ = 295488000.

The previous prime is 320111977. The next prime is 320112017. The reversal of 320112013 is 310211023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 183385764 + 136726249 = 13542^2 + 11693^2 .

It is a cyclic number.

It is not a de Polignac number, because 320112013 - 2²¹ = 318014861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 24624001 = 320112013 / (3 + 2 + 0 + 1 + 1 + 2 + 0 + 1 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 320111984 and 320112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320112017) 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, 12311988 + ... + 12312013.

It is an arithmetic number, because the mean of its divisors is an integer number (86184007).

Almost surely, 2^320112013 is an apocalyptic number.

It is an amenable number.

320112013 is a deficient number, since it is larger than the sum of its proper divisors (24624015).

320112013 is a wasteful number, since it uses less digits than its factorization.

320112013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24624014.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 320112013 is about 17891.6744045939. The cubic root of 320112013 is about 684.0701775003.

Adding to 320112013 its reverse (310211023), we get a palindrome (630323036).

The spelling of 320112013 in words is "three hundred twenty million, one hundred twelve thousand, thirteen".