229281923 has 4 divisors (see below), whose sum is σ = 246919008. Its totient is φ = 211644840.

The previous prime is 229281901. The next prime is 229281929. The reversal of 229281923 is 329182922.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229281923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229281929) 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, 8818523 + ... + 8818548.

It is an arithmetic number, because the mean of its divisors is an integer number (61729752).

Almost surely, 2^229281923 is an apocalyptic number.

229281923 is a deficient number, since it is larger than the sum of its proper divisors (17637085).

229281923 is a wasteful number, since it uses less digits than its factorization.

229281923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17637084.

The product of its digits is 31104, while the sum is 38.

The square root of 229281923 is about 15142.0580833650. The cubic root of 229281923 is about 612.0542789727.

Subtracting 229281923 from its reverse (329182922), we obtain a palindrome (99900999).

The spelling of 229281923 in words is "two hundred twenty-nine million, two hundred eighty-one thousand, nine hundred twenty-three".