113221131431 has 4 divisors (see below), whose sum is σ = 113232306264. Its totient is φ = 113209956600.

The previous prime is 113221131427. The next prime is 113221131473. The reversal of 113221131431 is 134131122311.

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 113221131431 - 2² = 113221131427 is a prime.

It is a super-3 number, since 3×113221131431³ (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 = 113221131397 and 113221131406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113221131131) 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, 5572205 + ... + 5592486.

It is an arithmetic number, because the mean of its divisors is an integer number (28308076566).

Almost surely, 2^113221131431 is an apocalyptic number.

113221131431 is a deficient number, since it is larger than the sum of its proper divisors (11174833).

113221131431 is a wasteful number, since it uses less digits than its factorization.

113221131431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11174832.

The product of its digits is 432, while the sum is 23.

Adding to 113221131431 its reverse (134131122311), we get a palindrome (247352253742).

The spelling of 113221131431 in words is "one hundred thirteen billion, two hundred twenty-one million, one hundred thirty-one thousand, four hundred thirty-one".