229170881 has 4 divisors (see below), whose sum is σ = 229809600. Its totient is φ = 228532164.

The previous prime is 229170869. The next prime is 229170883. The reversal of 229170881 is 188071922.

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 a de Polignac number, because none of the positive numbers 2^k-229170881 is a prime.

It is a super-2 number, since 2×229170881² = 105038585396632322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229170883) 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, 318821 + ... + 319538.

It is an arithmetic number, because the mean of its divisors is an integer number (57452400).

Almost surely, 2^229170881 is an apocalyptic number.

It is an amenable number.

229170881 is a deficient number, since it is larger than the sum of its proper divisors (638719).

229170881 is an equidigital number, since it uses as much as digits as its factorization.

229170881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638718.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 229170881 is about 15138.3909646963. The cubic root of 229170881 is about 611.9554563747.

The spelling of 229170881 in words is "two hundred twenty-nine million, one hundred seventy thousand, eight hundred eighty-one".