229647281 has 4 divisors (see below), whose sum is σ = 241734000. Its totient is φ = 217560564.

The previous prime is 229647241. The next prime is 229647289. The reversal of 229647281 is 182746922.

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 not a de Polignac number, because 229647281 - 2²² = 225452977 is a prime.

It is a super-3 number, since 3×229647281³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229647289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6043331 + ... + 6043368.

It is an arithmetic number, because the mean of its divisors is an integer number (60433500).

Almost surely, 2^229647281 is an apocalyptic number.

It is an amenable number.

229647281 is a deficient number, since it is larger than the sum of its proper divisors (12086719).

229647281 is a wasteful number, since it uses less digits than its factorization.

229647281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12086718.

The product of its digits is 96768, while the sum is 41.

The square root of 229647281 is about 15154.1176252529. The cubic root of 229647281 is about 612.3792068334.

The spelling of 229647281 in words is "two hundred twenty-nine million, six hundred forty-seven thousand, two hundred eighty-one".