113021305 has 4 divisors (see below), whose sum is σ = 135625572. Its totient is φ = 90417040.

The previous prime is 113021299. The next prime is 113021309. The reversal of 113021305 is 503120311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503120311 = 1193 ⋅421727.

It can be written as a sum of positive squares in 2 ways, for example, as 80622441 + 32398864 = 8979^2 + 5692^2 .

It is not a de Polignac number, because 113021305 - 2⁹ = 113020793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113021309) 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, 11302126 + ... + 11302135.

It is an arithmetic number, because the mean of its divisors is an integer number (33906393).

Almost surely, 2^113021305 is an apocalyptic number.

It is an amenable number.

113021305 is a deficient number, since it is larger than the sum of its proper divisors (22604267).

113021305 is an equidigital number, since it uses as much as digits as its factorization.

113021305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22604266.

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

The square root of 113021305 is about 10631.1478684101. The cubic root of 113021305 is about 483.4891945482.

Adding to 113021305 its reverse (503120311), we get a palindrome (616141616).

The spelling of 113021305 in words is "one hundred thirteen million, twenty-one thousand, three hundred five".