268333213 has 6 divisors (see below), whose sum is σ = 275687834. Its totient is φ = 260984016.

The previous prime is 268333193. The next prime is 268333237. The reversal of 268333213 is 312333862.

It can be written as a sum of positive squares in 3 ways, for example, as 68591524 + 199741689 = 8282^2 + 14133^2 .

It is a de Polignac number, because none of the positive numbers 2^k-268333213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268333283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 98295 + ... + 100987.

Almost surely, 2^268333213 is an apocalyptic number.

It is an amenable number.

268333213 is a deficient number, since it is larger than the sum of its proper divisors (7354621).

268333213 is an frugal number, since it uses more digits than its factorization.

268333213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5423 (or 2730 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 268333213 is about 16380.8794940931. The cubic root of 268333213 is about 644.9976667984.

The spelling of 268333213 in words is "two hundred sixty-eight million, three hundred thirty-three thousand, two hundred thirteen".