320042653 has 8 divisors (see below), whose sum is σ = 370915200. Its totient is φ = 270458160.

The previous prime is 320042651. The next prime is 320042659. The reversal of 320042653 is 356240023.

It is a happy number.

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

It is not a de Polignac number, because 320042653 - 2¹ = 320042651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320042651) 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, 321478 + ... + 322471.

It is an arithmetic number, because the mean of its divisors is an integer number (46364400).

Almost surely, 2^320042653 is an apocalyptic number.

It is an amenable number.

320042653 is a deficient number, since it is larger than the sum of its proper divisors (50872547).

320042653 is an equidigital number, since it uses as much as digits as its factorization.

320042653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644027.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 320042653 is about 17889.7359678672. The cubic root of 320042653 is about 684.0207671556.

Adding to 320042653 its reverse (356240023), we get a palindrome (676282676).

The spelling of 320042653 in words is "three hundred twenty million, forty-two thousand, six hundred fifty-three".