203122320113 has 4 divisors (see below), whose sum is σ = 213812968560. Its totient is φ = 192431671668.

The previous prime is 203122320109. The next prime is 203122320119. The reversal of 203122320113 is 311023221302.

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 203122320113 - 2² = 203122320109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203122320119) 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, 5345324195 + ... + 5345324232.

It is an arithmetic number, because the mean of its divisors is an integer number (53453242140).

Almost surely, 2^203122320113 is an apocalyptic number.

It is an amenable number.

203122320113 is a deficient number, since it is larger than the sum of its proper divisors (10690648447).

203122320113 is a wasteful number, since it uses less digits than its factorization.

203122320113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10690648446.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 203122320113 its reverse (311023221302), we get a palindrome (514145541415).

The spelling of 203122320113 in words is "two hundred three billion, one hundred twenty-two million, three hundred twenty thousand, one hundred thirteen".