320253342503 has 4 divisors (see below), whose sum is σ = 331296561240. Its totient is φ = 309210123768.

The previous prime is 320253342467. The next prime is 320253342509. The reversal of 320253342503 is 305243352023.

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 320253342503 - 2⁶ = 320253342439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320253342503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320253342509) 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, 5521609325 + ... + 5521609382.

It is an arithmetic number, because the mean of its divisors is an integer number (82824140310).

Almost surely, 2^320253342503 is an apocalyptic number.

320253342503 is a deficient number, since it is larger than the sum of its proper divisors (11043218737).

320253342503 is a wasteful number, since it uses less digits than its factorization.

320253342503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11043218736.

The product of its (nonzero) digits is 64800, while the sum is 32.

Adding to 320253342503 its reverse (305243352023), we get a palindrome (625496694526).

The spelling of 320253342503 in words is "three hundred twenty billion, two hundred fifty-three million, three hundred forty-two thousand, five hundred three".