113331203231 has 4 divisors (see below), whose sum is σ = 113458973232. Its totient is φ = 113203433232.

The previous prime is 113331203213. The next prime is 113331203243. The reversal of 113331203231 is 132302133311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113331203231 is a prime.

It is a super-2 number, since 2×113331203231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113331203197 and 113331203206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113331203261) 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 3 ways as a sum of consecutive naturals, for example, 63883670 + ... + 63885443.

It is an arithmetic number, because the mean of its divisors is an integer number (28364743308).

Almost surely, 2^113331203231 is an apocalyptic number.

113331203231 is a deficient number, since it is larger than the sum of its proper divisors (127770001).

113331203231 is an equidigital number, since it uses as much as digits as its factorization.

113331203231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127770000.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 113331203231 its reverse (132302133311), we get a palindrome (245633336542).

The spelling of 113331203231 in words is "one hundred thirteen billion, three hundred thirty-one million, two hundred three thousand, two hundred thirty-one".