226135681 has 4 divisors (see below), whose sum is σ = 226195200. Its totient is φ = 226076164.

The previous prime is 226135673. The next prime is 226135687. The reversal of 226135681 is 186531622.

226135681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 226135681 - 2³ = 226135673 is a prime.

It is a super-2 number, since 2×226135681² = 102274692442667522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226135687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23641 + ... + 31798.

It is an arithmetic number, because the mean of its divisors is an integer number (56548800).

Almost surely, 2^226135681 is an apocalyptic number.

It is an amenable number.

226135681 is a deficient number, since it is larger than the sum of its proper divisors (59519).

226135681 is an equidigital number, since it uses as much as digits as its factorization.

226135681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59518.

The product of its digits is 17280, while the sum is 34.

The square root of 226135681 is about 15037.8083842028. The cubic root of 226135681 is about 609.2418072641.

The spelling of 226135681 in words is "two hundred twenty-six million, one hundred thirty-five thousand, six hundred eighty-one".