203122310113 has 4 divisors (see below), whose sum is σ = 207444061440. Its totient is φ = 198800558788.

The previous prime is 203122310099. The next prime is 203122310123. The reversal of 203122310113 is 311013221302.

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 a de Polignac number, because none of the positive numbers 2^k-203122310113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203122310123) 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, 2160875593 + ... + 2160875686.

It is an arithmetic number, because the mean of its divisors is an integer number (51861015360).

Almost surely, 2^203122310113 is an apocalyptic number.

It is an amenable number.

203122310113 is a deficient number, since it is larger than the sum of its proper divisors (4321751327).

203122310113 is an equidigital number, since it uses as much as digits as its factorization.

203122310113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321751326.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 203122310113 its reverse (311013221302), we get a palindrome (514135531415).

The spelling of 203122310113 in words is "two hundred three billion, one hundred twenty-two million, three hundred ten thousand, one hundred thirteen".