242331 has 4 divisors (see below), whose sum is σ = 323112. Its totient is φ = 161552.

The previous prime is 242329. The next prime is 242357. The reversal of 242331 is 133242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242331 - 2¹ = 242329 is a prime.

It is a super-2 number, since 2×242331² = 117448627122, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 242331.

It is not an unprimeable number, because it can be changed into a prime (242371) 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 3 ways as a sum of consecutive naturals, for example, 40386 + ... + 40391.

It is an arithmetic number, because the mean of its divisors is an integer number (80778).

2²⁴²³³¹ is an apocalyptic number.

242331 is a deficient number, since it is larger than the sum of its proper divisors (80781).

242331 is an equidigital number, since it uses as much as digits as its factorization.

242331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80780.

The product of its digits is 144, while the sum is 15.

The square root of 242331 is about 492.2712666813. The cubic root of 242331 is about 62.3451955526.

Adding to 242331 its reverse (133242), we get a palindrome (375573).

The spelling of 242331 in words is "two hundred forty-two thousand, three hundred thirty-one".