113021443 has 16 divisors (see below), whose sum is σ = 123402240. Its totient is φ = 103118400.

The previous prime is 113021431. The next prime is 113021459. The reversal of 113021443 is 344120311.

It is a de Polignac number, because none of the positive numbers 2^k-113021443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113021443.

It is not an unprimeable number, because it can be changed into a prime (113021413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182871 + ... + 183487.

It is an arithmetic number, because the mean of its divisors is an integer number (7712640).

Almost surely, 2^113021443 is an apocalyptic number.

113021443 is a deficient number, since it is larger than the sum of its proper divisors (10380797).

113021443 is a wasteful number, since it uses less digits than its factorization.

113021443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 113021443 is about 10631.1543587703. The cubic root of 113021443 is about 483.4893913296.

Adding to 113021443 its reverse (344120311), we get a palindrome (457141754).

The spelling of 113021443 in words is "one hundred thirteen million, twenty-one thousand, four hundred forty-three".