102113503 has 4 divisors (see below), whose sum is σ = 102677848. Its totient is φ = 101549160.

The previous prime is 102113477. The next prime is 102113507. The reversal of 102113503 is 305311201.

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 102113503 - 2¹⁷ = 101982431 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 (102113507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281901 + ... + 282262.

It is an arithmetic number, because the mean of its divisors is an integer number (25669462).

Almost surely, 2^102113503 is an apocalyptic number.

102113503 is a deficient number, since it is larger than the sum of its proper divisors (564345).

102113503 is an equidigital number, since it uses as much as digits as its factorization.

102113503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564344.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 102113503 is about 10105.1226118242. The cubic root of 102113503 is about 467.4061168679.

Adding to 102113503 its reverse (305311201), we get a palindrome (407424704).

The spelling of 102113503 in words is "one hundred two million, one hundred thirteen thousand, five hundred three".