113509603 has 2 divisors, whose sum is σ = 113509604. Its totient is φ = 113509602.

The previous prime is 113509601. The next prime is 113509609. The reversal of 113509603 is 306905311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113509603 - 2¹ = 113509601 is a prime.

Together with 113509601, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (113509601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56754801 + 56754802.

It is an arithmetic number, because the mean of its divisors is an integer number (56754802).

Almost surely, 2^113509603 is an apocalyptic number.

113509603 is a deficient number, since it is larger than the sum of its proper divisors (1).

113509603 is an equidigital number, since it uses as much as digits as its factorization.

113509603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 113509603 is about 10654.0885579199. The cubic root of 113509603 is about 484.1844841765.

The spelling of 113509603 in words is "one hundred thirteen million, five hundred nine thousand, six hundred three".