229308261 has 16 divisors (see below), whose sum is σ = 376301184. Its totient is φ = 120953664.

The previous prime is 229308239. The next prime is 229308319. The reversal of 229308261 is 162803922.

It is a happy number.

It is not a de Polignac number, because 229308261 - 2¹⁵ = 229275493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229308361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419706 + ... + 420251.

It is an arithmetic number, because the mean of its divisors is an integer number (23518824).

Almost surely, 2^229308261 is an apocalyptic number.

229308261 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

229308261 is a deficient number, since it is larger than the sum of its proper divisors (146992923).

229308261 is a wasteful number, since it uses less digits than its factorization.

229308261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839980.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 229308261 is about 15142.9277552262. The cubic root of 229308261 is about 612.0777139767.

The spelling of 229308261 in words is "two hundred twenty-nine million, three hundred eight thousand, two hundred sixty-one".