320140453 has 8 divisors (see below), whose sum is σ = 327553920. Its totient is φ = 312752160.

The previous prime is 320140451. The next prime is 320140459. The reversal of 320140453 is 354041023.

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

It is a cyclic number.

It is not a de Polignac number, because 320140453 - 2¹ = 320140451 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 (320140451) 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, 20758 + ... + 32728.

It is an arithmetic number, because the mean of its divisors is an integer number (40944240).

Almost surely, 2^320140453 is an apocalyptic number.

It is an amenable number.

320140453 is a deficient number, since it is larger than the sum of its proper divisors (7413467).

320140453 is a wasteful number, since it uses less digits than its factorization.

320140453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12587.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 320140453 is about 17892.4691700168. The cubic root of 320140453 is about 684.0904353881.

Adding to 320140453 its reverse (354041023), we get a palindrome (674181476).

The spelling of 320140453 in words is "three hundred twenty million, one hundred forty thousand, four hundred fifty-three".