26311 has 4 divisors (see below), whose sum is σ = 26712. Its totient is φ = 25912.

The previous prime is 26309. The next prime is 26317. The reversal of 26311 is 11362.

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 26311 - 2¹ = 26309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26291 and 26300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26317) 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, 76 + ... + 241.

It is an arithmetic number, because the mean of its divisors is an integer number (6678).

2²⁶³¹¹ is an apocalyptic number.

26311 is a deficient number, since it is larger than the sum of its proper divisors (401).

26311 is an equidigital number, since it uses as much as digits as its factorization.

26311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400.

The product of its digits is 36, while the sum is 13.

The square root of 26311 is about 162.2066583097. The cubic root of 26311 is about 29.7426128588.

Adding to 26311 its reverse (11362), we get a palindrome (37673).

The spelling of 26311 in words is "twenty-six thousand, three hundred eleven".