232921 has 16 divisors (see below), whose sum is σ = 282240. Its totient is φ = 190080.

The previous prime is 232919. The next prime is 232937. The reversal of 232921 is 129232.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 232921 - 2¹ = 232919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

232921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (232901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5661 + ... + 5701.

It is an arithmetic number, because the mean of its divisors is an integer number (17640).

2²³²⁹²¹ is an apocalyptic number.

It is an amenable number.

232921 is a deficient number, since it is larger than the sum of its proper divisors (49319).

232921 is a wasteful number, since it uses less digits than its factorization.

232921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96.

The product of its digits is 216, while the sum is 19.

The square root of 232921 is about 482.6188972678. The cubic root of 232921 is about 61.5275396081.

It can be divided in two parts, 2 and 32921, that added together give a palindrome (32923).

The spelling of 232921 in words is "two hundred thirty-two thousand, nine hundred twenty-one".