113131344631 has 16 divisors (see below), whose sum is σ = 115381984000. Its totient is φ = 110901374208.

The previous prime is 113131344527. The next prime is 113131344647. The reversal of 113131344631 is 136443131311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 113131344631 - 2⁹ = 113131344119 is a prime.

It is a super-2 number, since 2×113131344631² (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 = 113131344593 and 113131344602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113131342631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10141645 + ... + 10152793.

It is an arithmetic number, because the mean of its divisors is an integer number (7211374000).

Almost surely, 2^113131344631 is an apocalyptic number.

113131344631 is a deficient number, since it is larger than the sum of its proper divisors (2250639369).

113131344631 is a wasteful number, since it uses less digits than its factorization.

113131344631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12058.

The product of its digits is 7776, while the sum is 31.

Adding to 113131344631 its reverse (136443131311), we get a palindrome (249574475942).

The spelling of 113131344631 in words is "one hundred thirteen billion, one hundred thirty-one million, three hundred forty-four thousand, six hundred thirty-one".