113253021 has 12 divisors (see below), whose sum is σ = 186957472. Its totient is φ = 64715976.

The previous prime is 113253001. The next prime is 113253043. The reversal of 113253021 is 120352311.

113253021 is a `hidden beast` number, since 1 + 132 + 530 + 2 + 1 = 666.

It is not a de Polignac number, because 113253021 - 2¹⁰ = 113251997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 113252985 and 113253003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113253001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 898771 + ... + 898896.

Almost surely, 2^113253021 is an apocalyptic number.

It is an amenable number.

113253021 is a deficient number, since it is larger than the sum of its proper divisors (73704451).

113253021 is a wasteful number, since it uses less digits than its factorization.

113253021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797680 (or 1797677 counting only the distinct ones).

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

The square root of 113253021 is about 10642.0402649116. The cubic root of 113253021 is about 483.8193851159.

The spelling of 113253021 in words is "one hundred thirteen million, two hundred fifty-three thousand, twenty-one".