26311013 has 4 divisors (see below), whose sum is σ = 26324460. Its totient is φ = 26297568.

The previous prime is 26311007. The next prime is 26311027. The reversal of 26311013 is 31011362.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5943844 + 20367169 = 2438^2 + 4513^2 .

It is a cyclic number.

It is not a de Polignac number, because 26311013 - 2⁴ = 26310997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26310982 and 26311000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26311073) 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 3 ways as a sum of consecutive naturals, for example, 3158 + ... + 7911.

It is an arithmetic number, because the mean of its divisors is an integer number (6581115).

Almost surely, 2^26311013 is an apocalyptic number.

It is an amenable number.

26311013 is a deficient number, since it is larger than the sum of its proper divisors (13447).

26311013 is a wasteful number, since it uses less digits than its factorization.

26311013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13446.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 26311013 is about 5129.4261862318. The cubic root of 26311013 is about 297.4261775731.

Adding to 26311013 its reverse (31011362), we get a palindrome (57322375).

The spelling of 26311013 in words is "twenty-six million, three hundred eleven thousand, thirteen".