113305019 has 4 divisors (see below), whose sum is σ = 113422680. Its totient is φ = 113187360.

The previous prime is 113305013. The next prime is 113305057. The reversal of 113305019 is 910503311.

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 113305019 - 2¹² = 113300923 is a prime.

It is a super-4 number, since 4×113305019⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113304985 and 113305003.

It is not an unprimeable number, because it can be changed into a prime (113305013) 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, 57374 + ... + 59315.

It is an arithmetic number, because the mean of its divisors is an integer number (28355670).

Almost surely, 2^113305019 is an apocalyptic number.

113305019 is a deficient number, since it is larger than the sum of its proper divisors (117661).

113305019 is an equidigital number, since it uses as much as digits as its factorization.

113305019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117660.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 113305019 is about 10644.4830311293. The cubic root of 113305019 is about 483.8934193180.

The spelling of 113305019 in words is "one hundred thirteen million, three hundred five thousand, nineteen".