320125073 has 4 divisors (see below), whose sum is σ = 328777140. Its totient is φ = 311473008.

The previous prime is 320125033. The next prime is 320125081. The reversal of 320125073 is 370521023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119421184 + 200703889 = 10928^2 + 14167^2 .

It is a cyclic number.

It is not a de Polignac number, because 320125073 - 2²⁴ = 303347857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (320125033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4325978 + ... + 4326051.

It is an arithmetic number, because the mean of its divisors is an integer number (82194285).

Almost surely, 2^320125073 is an apocalyptic number.

It is an amenable number.

320125073 is a deficient number, since it is larger than the sum of its proper divisors (8652067).

320125073 is an equidigital number, since it uses as much as digits as its factorization.

320125073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8652066.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 320125073 is about 17892.0393750964. The cubic root of 320125073 is about 684.0794803221.

Adding to 320125073 its reverse (370521023), we get a palindrome (690646096).

The spelling of 320125073 in words is "three hundred twenty million, one hundred twenty-five thousand, seventy-three".