113203111 has 16 divisors (see below), whose sum is σ = 131258880. Its totient is φ = 95628960.

The previous prime is 113203109. The next prime is 113203157. The reversal of 113203111 is 111302311.

It is not a de Polignac number, because 113203111 - 2¹ = 113203109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113203091 and 113203100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113203411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268681 + ... + 269101.

It is an arithmetic number, because the mean of its divisors is an integer number (8203680).

Almost surely, 2^113203111 is an apocalyptic number.

113203111 is a deficient number, since it is larger than the sum of its proper divisors (18055769).

113203111 is a wasteful number, since it uses less digits than its factorization.

113203111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 113203111 is about 10639.6950614198. The cubic root of 113203111 is about 483.7483024687.

Adding to 113203111 its reverse (111302311), we get a palindrome (224505422).

The spelling of 113203111 in words is "one hundred thirteen million, two hundred three thousand, one hundred eleven".