320113240 has 64 divisors (see below), whose sum is σ = 753701760. Its totient is φ = 122234880.

The previous prime is 320113237. The next prime is 320113243. The reversal of 320113240 is 42311023.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (320113237) and next prime (320113243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320113243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75004 + ... + 79156.

It is an arithmetic number, because the mean of its divisors is an integer number (11776590).

Almost surely, 2^320113240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320113240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376850880).

320113240 is an abundant number, since it is smaller than the sum of its proper divisors (433588520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320113240 is a wasteful number, since it uses less digits than its factorization.

320113240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252 (or 4248 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 320113240 is about 17891.7086942528. The cubic root of 320113240 is about 684.0710515205.

Adding to 320113240 its reverse (42311023), we get a palindrome (362424263).

The spelling of 320113240 in words is "three hundred twenty million, one hundred thirteen thousand, two hundred forty".