203210112113 has 4 divisors (see below), whose sum is σ = 203211099120. Its totient is φ = 203209125108.

The previous prime is 203210112107. The next prime is 203210112137. The reversal of 203210112113 is 311211012302.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 203210112113 - 2⁴ = 203210112097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203210112091 and 203210112100.

It is not an unprimeable number, because it can be changed into a prime (203210112103) 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, 54503 + ... + 639836.

It is an arithmetic number, because the mean of its divisors is an integer number (50802774780).

Almost surely, 2^203210112113 is an apocalyptic number.

It is an amenable number.

203210112113 is a deficient number, since it is larger than the sum of its proper divisors (987007).

203210112113 is an equidigital number, since it uses as much as digits as its factorization.

203210112113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987006.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 203210112113 its reverse (311211012302), we get a palindrome (514421124415).

The spelling of 203210112113 in words is "two hundred three billion, two hundred ten million, one hundred twelve thousand, one hundred thirteen".