268331 has 4 divisors (see below), whose sum is σ = 306672. Its totient is φ = 229992.

The previous prime is 268297. The next prime is 268343. The reversal of 268331 is 133862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133862 = 2 ⋅66931.

It is not a de Polignac number, because 268331 - 2⁶ = 268267 is a prime.

It is a super-2 number, since 2×268331² = 144003051122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268297 and 268306.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 268331.

It is not an unprimeable number, because it can be changed into a prime (268531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19160 + ... + 19173.

It is an arithmetic number, because the mean of its divisors is an integer number (76668).

2²⁶⁸³³¹ is an apocalyptic number.

268331 is a deficient number, since it is larger than the sum of its proper divisors (38341).

268331 is an equidigital number, since it uses as much as digits as its factorization.

268331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38340.

The product of its digits is 864, while the sum is 23.

The square root of 268331 is about 518.0067567127. The cubic root of 268331 is about 64.4995893650.

The spelling of 268331 in words is "two hundred sixty-eight thousand, three hundred thirty-one".