113220203131 has 4 divisors (see below), whose sum is σ = 129394517872. Its totient is φ = 97045888392.

The previous prime is 113220203069. The next prime is 113220203137. The reversal of 113220203131 is 131302022311.

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

It is a cyclic number.

It is not a de Polignac number, because 113220203131 - 2¹⁹ = 113219678843 is a prime.

It is a super-2 number, since 2×113220203131² (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 = 113220203099 and 113220203108.

It is not an unprimeable number, because it can be changed into a prime (113220203137) 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, 8087157360 + ... + 8087157373.

It is an arithmetic number, because the mean of its divisors is an integer number (32348629468).

Almost surely, 2^113220203131 is an apocalyptic number.

113220203131 is a deficient number, since it is larger than the sum of its proper divisors (16174314741).

113220203131 is an equidigital number, since it uses as much as digits as its factorization.

113220203131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16174314740.

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

Adding to 113220203131 its reverse (131302022311), we get a palindrome (244522225442).

The spelling of 113220203131 in words is "one hundred thirteen billion, two hundred twenty million, two hundred three thousand, one hundred thirty-one".