113103 has 16 divisors (see below), whose sum is σ = 172800. Its totient is φ = 73080.

The previous prime is 113093. The next prime is 113111. The reversal of 113103 is 301311.

It is not a de Polignac number, because 113103 - 2⁶ = 113039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an Ulam number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1558 + ... + 1628.

It is an arithmetic number, because the mean of its divisors is an integer number (10800).

2¹¹³¹⁰³ is an apocalyptic number.

113103 is the 213-rd heptagonal number.

113103 is a deficient number, since it is larger than the sum of its proper divisors (59697).

113103 is an equidigital number, since it uses as much as digits as its factorization.

113103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 113103 is about 336.3078946442. The cubic root of 113103 is about 48.3605659719.

Adding to 113103 its reverse (301311), we get a palindrome (414414).

It can be divided in two parts, 11310 and 3, that multiplied together give a triangular number (33930 = T₂₆₀).

The spelling of 113103 in words is "one hundred thirteen thousand, one hundred three".