183121 has 4 divisors (see below), whose sum is σ = 184500. Its totient is φ = 181744.

The previous prime is 183119. The next prime is 183151. The reversal of 183121 is 121381.

183121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121381 = 13 ⋅9337.

It can be written as a sum of positive squares in 2 ways, for example, as 112896 + 70225 = 336^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 183121 - 2¹ = 183119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 183095 and 183104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (183151) 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, 466 + ... + 763.

It is an arithmetic number, because the mean of its divisors is an integer number (46125).

2¹⁸³¹²¹ is an apocalyptic number.

It is an amenable number.

183121 is a deficient number, since it is larger than the sum of its proper divisors (1379).

183121 is a wasteful number, since it uses less digits than its factorization.

183121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378.

The product of its digits is 48, while the sum is 16.

The square root of 183121 is about 427.9263955402. The cubic root of 183121 is about 56.7866240076.

The spelling of 183121 in words is "one hundred eighty-three thousand, one hundred twenty-one".