203121344320339 has 4 divisors (see below), whose sum is σ = 203170753554400. Its totient is φ = 203071935086280.

The previous prime is 203121344320333. The next prime is 203121344320403. The reversal of 203121344320339 is 933023443121302.

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

It is a cyclic number.

It is not a de Polignac number, because 203121344320339 - 2³¹ = 203119196836691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203121344320333) 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, 24704610864 + ... + 24704619085.

It is an arithmetic number, because the mean of its divisors is an integer number (50792688388600).

Almost surely, 2^{203121344320339} is an apocalyptic number.

203121344320339 is a deficient number, since it is larger than the sum of its proper divisors (49409234061).

203121344320339 is an equidigital number, since it uses as much as digits as its factorization.

203121344320339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49409234060.

The product of its (nonzero) digits is 279936, while the sum is 40.

The spelling of 203121344320339 in words is "two hundred three trillion, one hundred twenty-one billion, three hundred forty-four million, three hundred twenty thousand, three hundred thirty-nine".