232881221 has 4 divisors (see below), whose sum is σ = 232911744. Its totient is φ = 232850700.

The previous prime is 232881191. The next prime is 232881247. The reversal of 232881221 is 122188232.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 232881221 - 2²⁶ = 165772357 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 (232881251) 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, 7436 + ... + 22826.

It is an arithmetic number, because the mean of its divisors is an integer number (58227936).

Almost surely, 2^232881221 is an apocalyptic number.

It is an amenable number.

232881221 is a deficient number, since it is larger than the sum of its proper divisors (30523).

232881221 is a wasteful number, since it uses less digits than its factorization.

232881221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30522.

The product of its digits is 3072, while the sum is 29.

The square root of 232881221 is about 15260.4462909838. The cubic root of 232881221 is about 615.2403678481.

The spelling of 232881221 in words is "two hundred thirty-two million, eight hundred eighty-one thousand, two hundred twenty-one".