229123391 has 4 divisors (see below), whose sum is σ = 261855312. Its totient is φ = 196391472.

The previous prime is 229123369. The next prime is 229123417. The reversal of 229123391 is 193321922.

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

It is a cyclic number.

It is not a de Polignac number, because 229123391 - 2¹⁴ = 229107007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229123361) 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, 16365950 + ... + 16365963.

It is an arithmetic number, because the mean of its divisors is an integer number (65463828).

Almost surely, 2^229123391 is an apocalyptic number.

229123391 is a deficient number, since it is larger than the sum of its proper divisors (32731921).

229123391 is an equidigital number, since it uses as much as digits as its factorization.

229123391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32731920.

The product of its digits is 5832, while the sum is 32.

The square root of 229123391 is about 15136.8223547745. The cubic root of 229123391 is about 611.9131825742.

The spelling of 229123391 in words is "two hundred twenty-nine million, one hundred twenty-three thousand, three hundred ninety-one".