113103031 has 4 divisors (see below), whose sum is σ = 113445064. Its totient is φ = 112761000.

The previous prime is 113103013. The next prime is 113103037. The reversal of 113103031 is 130301311.

It is a happy number.

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 113103031 - 2⁷ = 113102903 is a prime.

It is a super-2 number, since 2×113103031² = 25584591242773922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113103037) 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, 170520 + ... + 171181.

It is an arithmetic number, because the mean of its divisors is an integer number (28361266).

Almost surely, 2^113103031 is an apocalyptic number.

113103031 is a deficient number, since it is larger than the sum of its proper divisors (342033).

113103031 is an equidigital number, since it uses as much as digits as its factorization.

113103031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342032.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 113103031 is about 10634.9908791686. The cubic root of 113103031 is about 483.6057039019.

Adding to 113103031 its reverse (130301311), we get a palindrome (243404342).

It can be divided in two parts, 11310 and 3031, that added together give a palindrome (14341).

The spelling of 113103031 in words is "one hundred thirteen million, one hundred three thousand, thirty-one".