113032021 has 4 divisors (see below), whose sum is σ = 113089132. Its totient is φ = 112974912.

The previous prime is 113032013. The next prime is 113032027. The reversal of 113032021 is 120230311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120230311 = 607 ⋅198073.

It can be written as a sum of positive squares in 2 ways, for example, as 36469521 + 76562500 = 6039^2 + 8750^2 .

It is a cyclic number.

It is not a de Polignac number, because 113032021 - 2³ = 113032013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113031992 and 113032010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113032027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25476 + ... + 29581.

It is an arithmetic number, because the mean of its divisors is an integer number (28272283).

Almost surely, 2^113032021 is an apocalyptic number.

It is an amenable number.

113032021 is a deficient number, since it is larger than the sum of its proper divisors (57111).

113032021 is an equidigital number, since it uses as much as digits as its factorization.

113032021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57110.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 113032021 is about 10631.6518471967. The cubic root of 113032021 is about 483.5044745772.

Adding to 113032021 its reverse (120230311), we get a palindrome (233262332).

The spelling of 113032021 in words is "one hundred thirteen million, thirty-two thousand, twenty-one".