320402013 has 8 divisors (see below), whose sum is σ = 435263328. Its totient is φ = 209571024.

The previous prime is 320401999. The next prime is 320402021. The reversal of 320402013 is 310204023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320402013 - 2²⁵ = 286847581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320401983 and 320402001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320402083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1007395 + ... + 1007712.

It is an arithmetic number, because the mean of its divisors is an integer number (54407916).

Almost surely, 2^320402013 is an apocalyptic number.

It is an amenable number.

320402013 is a deficient number, since it is larger than the sum of its proper divisors (114861315).

320402013 is a wasteful number, since it uses less digits than its factorization.

320402013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015163.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 320402013 is about 17899.7768980510. The cubic root of 320402013 is about 684.2766890412.

Adding to 320402013 its reverse (310204023), we get a palindrome (630606036).

The spelling of 320402013 in words is "three hundred twenty million, four hundred two thousand, thirteen".