383121 has 6 divisors (see below), whose sum is σ = 553410. Its totient is φ = 255408.

The previous prime is 383113. The next prime is 383143. The reversal of 383121 is 121383.

It can be written as a sum of positive squares in only one way, i.e., 318096 + 65025 = 564^2 + 255^2 .

It is not a de Polignac number, because 383121 - 2³ = 383113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 383094 and 383103.

It is not an unprimeable number, because it can be changed into a prime (383101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21276 + ... + 21293.

It is an arithmetic number, because the mean of its divisors is an integer number (92235).

2³⁸³¹²¹ is an apocalyptic number.

It is an amenable number.

383121 is a deficient number, since it is larger than the sum of its proper divisors (170289).

383121 is a wasteful number, since it uses less digits than its factorization.

383121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42575 (or 42572 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 383121 is about 618.9676889790. The cubic root of 383121 is about 72.6293213075.

The spelling of 383121 in words is "three hundred eighty-three thousand, one hundred twenty-one".