320730277253 has 4 divisors (see below), whose sum is σ = 320731547340. Its totient is φ = 320729007168.

The previous prime is 320730277229. The next prime is 320730277277. The reversal of 320730277253 is 352772037023.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (320730277229) and next prime (320730277277).

It can be written as a sum of positive squares in 2 ways, for example, as 226150655809 + 94579621444 = 475553^2 + 307538^2 .

It is a cyclic number.

It is not a de Polignac number, because 320730277253 - 2²⁸ = 320461841797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 320730277253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320730277223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113450 + ... + 808907.

It is an arithmetic number, because the mean of its divisors is an integer number (80182886835).

Almost surely, 2^320730277253 is an apocalyptic number.

It is an amenable number.

320730277253 is a deficient number, since it is larger than the sum of its proper divisors (1270087).

320730277253 is an equidigital number, since it uses as much as digits as its factorization.

320730277253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270086.

The product of its (nonzero) digits is 370440, while the sum is 41.

The spelling of 320730277253 in words is "three hundred twenty billion, seven hundred thirty million, two hundred seventy-seven thousand, two hundred fifty-three".