268921131 has 4 divisors (see below), whose sum is σ = 358561512. Its totient is φ = 179280752.

The previous prime is 268921111. The next prime is 268921139. The reversal of 268921131 is 131129862.

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 268921131 - 2¹³ = 268912939 is a prime.

It is a super-2 number, since 2×268921131² = 144637149396638322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 268921092 and 268921101.

It is not an unprimeable number, because it can be changed into a prime (268921139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44820186 + ... + 44820191.

It is an arithmetic number, because the mean of its divisors is an integer number (89640378).

Almost surely, 2^268921131 is an apocalyptic number.

268921131 is a deficient number, since it is larger than the sum of its proper divisors (89640381).

268921131 is an equidigital number, since it uses as much as digits as its factorization.

268921131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89640380.

The product of its digits is 5184, while the sum is 33.

The square root of 268921131 is about 16398.8149266952. The cubic root of 268921131 is about 645.4683864236.

The spelling of 268921131 in words is "two hundred sixty-eight million, nine hundred twenty-one thousand, one hundred thirty-one".