320857073273 has 4 divisors (see below), whose sum is σ = 350025898128. Its totient is φ = 291688248420.

The previous prime is 320857073269. The next prime is 320857073297. The reversal of 320857073273 is 372370758023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320857073273 - 2² = 320857073269 is a prime.

It is a super-3 number, since 3×320857073273³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320857079273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14584412411 + ... + 14584412432.

It is an arithmetic number, because the mean of its divisors is an integer number (87506474532).

Almost surely, 2^320857073273 is an apocalyptic number.

It is an amenable number.

320857073273 is a deficient number, since it is larger than the sum of its proper divisors (29168824855).

320857073273 is a wasteful number, since it uses less digits than its factorization.

320857073273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29168824854.

The product of its (nonzero) digits is 1481760, while the sum is 47.

The spelling of 320857073273 in words is "three hundred twenty billion, eight hundred fifty-seven million, seventy-three thousand, two hundred seventy-three".