113028431 has 4 divisors (see below), whose sum is σ = 115785264. Its totient is φ = 110271600.

The previous prime is 113028413. The next prime is 113028491. The reversal of 113028431 is 134820311.

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 113028431 - 2⁶ = 113028367 is a prime.

It is a super-2 number, since 2×113028431² = 25550852428643522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113028397 and 113028406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113028491) 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 3 ways as a sum of consecutive naturals, for example, 1378355 + ... + 1378436.

It is an arithmetic number, because the mean of its divisors is an integer number (28946316).

Almost surely, 2^113028431 is an apocalyptic number.

113028431 is a deficient number, since it is larger than the sum of its proper divisors (2756833).

113028431 is an equidigital number, since it uses as much as digits as its factorization.

113028431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756832.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 113028431 is about 10631.4830103801. The cubic root of 113028431 is about 483.4993556754.

Adding to 113028431 its reverse (134820311), we get a palindrome (247848742).

The spelling of 113028431 in words is "one hundred thirteen million, twenty-eight thousand, four hundred thirty-one".