113235021 has 12 divisors (see below), whose sum is σ = 164757372. Its totient is φ = 74938176.

The previous prime is 113235019. The next prime is 113235043. The reversal of 113235021 is 120532311.

It can be written as a sum of positive squares in 2 ways, for example, as 45765225 + 67469796 = 6765^2 + 8214^2 .

It is not a de Polignac number, because 113235021 - 2¹ = 113235019 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 113234985 and 113235003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113235061) 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 11 ways as a sum of consecutive naturals, for example, 44686 + ... + 47151.

It is an arithmetic number, because the mean of its divisors is an integer number (13729781).

Almost surely, 2^113235021 is an apocalyptic number.

It is an amenable number.

113235021 is a deficient number, since it is larger than the sum of its proper divisors (51522351).

113235021 is a wasteful number, since it uses less digits than its factorization.

113235021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91980 (or 91977 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 113235021 is about 10641.1945288111. The cubic root of 113235021 is about 483.7937516265.

Adding to 113235021 its reverse (120532311), we get a palindrome (233767332).

The spelling of 113235021 in words is "one hundred thirteen million, two hundred thirty-five thousand, twenty-one".