268521311 has 8 divisors (see below), whose sum is σ = 270978048. Its totient is φ = 266071000.

The previous prime is 268521299. The next prime is 268521359. The reversal of 268521311 is 113125862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 268521311 - 2¹⁴ = 268504927 is a prime.

It is a super-2 number, since 2×268521311² = 144207388922317442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268521371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126146 + ... + 128256.

It is an arithmetic number, because the mean of its divisors is an integer number (33872256).

Almost surely, 2^268521311 is an apocalyptic number.

268521311 is a deficient number, since it is larger than the sum of its proper divisors (2456737).

268521311 is a wasteful number, since it uses less digits than its factorization.

268521311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213.

The product of its digits is 2880, while the sum is 29.

The square root of 268521311 is about 16386.6198772047. The cubic root of 268521311 is about 645.1483431811.

The spelling of 268521311 in words is "two hundred sixty-eight million, five hundred twenty-one thousand, three hundred eleven".