320773421 has 8 divisors (see below), whose sum is σ = 333135264. Its totient is φ = 308634480.

The previous prime is 320773403. The next prime is 320773429. The reversal of 320773421 is 124377023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320773421 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 (320773429) 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, 52790 + ... + 58551.

It is an arithmetic number, because the mean of its divisors is an integer number (41641908).

Almost surely, 2^320773421 is an apocalyptic number.

It is an amenable number.

320773421 is a deficient number, since it is larger than the sum of its proper divisors (12361843).

320773421 is a wasteful number, since it uses less digits than its factorization.

320773421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111451.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 320773421 is about 17910.1485476810. The cubic root of 320773421 is about 684.5409900214.

The spelling of 320773421 in words is "three hundred twenty million, seven hundred seventy-three thousand, four hundred twenty-one".