113131322231 has 4 divisors (see below), whose sum is σ = 113890593000. Its totient is φ = 112372051464.

The previous prime is 113131322219. The next prime is 113131322287. The reversal of 113131322231 is 132223131311.

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 113131322231 - 2⁶ = 113131322167 is a prime.

It is a super-3 number, since 3×113131322231³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113131322197 and 113131322206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113131322131) 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, 379635161 + ... + 379635458.

It is an arithmetic number, because the mean of its divisors is an integer number (28472648250).

Almost surely, 2^113131322231 is an apocalyptic number.

113131322231 is a deficient number, since it is larger than the sum of its proper divisors (759270769).

113131322231 is an equidigital number, since it uses as much as digits as its factorization.

113131322231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759270768.

The product of its digits is 648, while the sum is 23.

Adding to 113131322231 its reverse (132223131311), we get a palindrome (245354453542).

The spelling of 113131322231 in words is "one hundred thirteen billion, one hundred thirty-one million, three hundred twenty-two thousand, two hundred thirty-one".