113903 has 2 divisors, whose sum is σ = 113904. Its totient is φ = 113902.

The previous prime is 113899. The next prime is 113909. The reversal of 113903 is 309311.

It is a weak prime.

It is an emirp because it is prime and its reverse (309311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113903 - 2² = 113899 is a prime.

It is a plaindrome in base 12 and base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113909) 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 as a sum of consecutive naturals, namely, 56951 + 56952.

It is an arithmetic number, because the mean of its divisors is an integer number (56952).

2¹¹³⁹⁰³ is an apocalyptic number.

113903 is a deficient number, since it is larger than the sum of its proper divisors (1).

113903 is an equidigital number, since it uses as much as digits as its factorization.

113903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 113903 is about 337.4951851508. The cubic root of 113903 is about 48.4743194900.

The spelling of 113903 in words is "one hundred thirteen thousand, nine hundred three".