113303431 has 4 divisors (see below), whose sum is σ = 114195712. Its totient is φ = 112411152.

The previous prime is 113303381. The next prime is 113303467. The reversal of 113303431 is 134303311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134303311 = 223 ⋅602257.

It is a cyclic number.

It is not a de Polignac number, because 113303431 - 2²¹ = 111206279 is a prime.

It is a super-3 number, since 3×113303431³ (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 = 113303399 and 113303408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113363431) 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, 445950 + ... + 446203.

It is an arithmetic number, because the mean of its divisors is an integer number (28548928).

Almost surely, 2^113303431 is an apocalyptic number.

113303431 is a deficient number, since it is larger than the sum of its proper divisors (892281).

113303431 is an equidigital number, since it uses as much as digits as its factorization.

113303431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892280.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 113303431 is about 10644.4084382365. The cubic root of 113303431 is about 483.8911586758.

Adding to 113303431 its reverse (134303311), we get a palindrome (247606742).

The spelling of 113303431 in words is "one hundred thirteen million, three hundred three thousand, four hundred thirty-one".