113218533 has 8 divisors (see below), whose sum is σ = 167731200. Its totient is φ = 75479004.

The previous prime is 113218531. The next prime is 113218537. The reversal of 113218533 is 335812311.

113218533 is a `hidden beast` number, since 113 + 2 + 18 + 533 = 666.

It is not a de Polignac number, because 113218533 - 2¹ = 113218531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4193279 = 113218533 / (1 + 1 + 3 + 2 + 1 + 8 + 5 + 3 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 113218497 and 113218506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113218531) 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, 2096613 + ... + 2096666.

It is an arithmetic number, because the mean of its divisors is an integer number (20966400).

Almost surely, 2^113218533 is an apocalyptic number.

It is an amenable number.

113218533 is a deficient number, since it is larger than the sum of its proper divisors (54512667).

113218533 is an equidigital number, since it uses as much as digits as its factorization.

113218533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193288 (or 4193282 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 113218533 is about 10640.4197755540. The cubic root of 113218533 is about 483.7702689662.

The spelling of 113218533 in words is "one hundred thirteen million, two hundred eighteen thousand, five hundred thirty-three".