113432021 has 8 divisors (see below), whose sum is σ = 122446080. Its totient is φ = 104758192.

The previous prime is 113432017. The next prime is 113432063. The reversal of 113432021 is 120234311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113432021 - 2² = 113432017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113432621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84365 + ... + 85698.

It is an arithmetic number, because the mean of its divisors is an integer number (15305760).

Almost surely, 2^113432021 is an apocalyptic number.

It is an amenable number.

113432021 is a deficient number, since it is larger than the sum of its proper divisors (9014059).

113432021 is a wasteful number, since it uses less digits than its factorization.

113432021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170115.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 113432021 is about 10650.4469859251. The cubic root of 113432021 is about 484.0741482489.

Adding to 113432021 its reverse (120234311), we get a palindrome (233666332).

The spelling of 113432021 in words is "one hundred thirteen million, four hundred thirty-two thousand, twenty-one".