113142503 has 4 divisors (see below), whose sum is σ = 115773768. Its totient is φ = 110511240.

The previous prime is 113142461. The next prime is 113142509. The reversal of 113142503 is 305241311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305241311 = 109 ⋅2800379.

It is a cyclic number.

It is not a de Polignac number, because 113142503 - 2¹⁴ = 113126119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113142509) 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, 1315568 + ... + 1315653.

It is an arithmetic number, because the mean of its divisors is an integer number (28943442).

Almost surely, 2^113142503 is an apocalyptic number.

113142503 is a deficient number, since it is larger than the sum of its proper divisors (2631265).

113142503 is an equidigital number, since it uses as much as digits as its factorization.

113142503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631264.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 113142503 is about 10636.8464781626. The cubic root of 113142503 is about 483.6619554570.

Adding to 113142503 its reverse (305241311), we get a palindrome (418383814).

It can be divided in two parts, 1131 and 42503, that added together give a palindrome (43634).

The spelling of 113142503 in words is "one hundred thirteen million, one hundred forty-two thousand, five hundred three".