113105431 has 8 divisors (see below), whose sum is σ = 114019200. Its totient is φ = 112195512.

The previous prime is 113105417. The next prime is 113105441. The reversal of 113105431 is 134501311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113105431 - 2⁷ = 113105303 is a prime.

It is a super-3 number, since 3×113105431³ (a number of 25 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 = 113105399 and 113105408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113105401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87516 + ... + 88798.

It is an arithmetic number, because the mean of its divisors is an integer number (14252400).

Almost surely, 2^113105431 is an apocalyptic number.

113105431 is a deficient number, since it is larger than the sum of its proper divisors (913769).

113105431 is a wasteful number, since it uses less digits than its factorization.

113105431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 113105431 is about 10635.1037136457. The cubic root of 113105431 is about 483.6091245160.

Adding to 113105431 its reverse (134501311), we get a palindrome (247606742).

The spelling of 113105431 in words is "one hundred thirteen million, one hundred five thousand, four hundred thirty-one".