113520012503 has 4 divisors (see below), whose sum is σ = 113522709288. Its totient is φ = 113517315720.

The previous prime is 113520012499. The next prime is 113520012509. The reversal of 113520012503 is 305210025311.

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 113520012503 - 2² = 113520012499 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 (113520012509) 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, 1284233 + ... + 1369778.

It is an arithmetic number, because the mean of its divisors is an integer number (28380677322).

Almost surely, 2^113520012503 is an apocalyptic number.

113520012503 is a deficient number, since it is larger than the sum of its proper divisors (2696785).

113520012503 is an equidigital number, since it uses as much as digits as its factorization.

113520012503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696784.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 113520012503 its reverse (305210025311), we get a palindrome (418730037814).

The spelling of 113520012503 in words is "one hundred thirteen billion, five hundred twenty million, twelve thousand, five hundred three".