26312813 has 4 divisors (see below), whose sum is σ = 26683488. Its totient is φ = 25942140.

The previous prime is 26312801. The next prime is 26312849. The reversal of 26312813 is 31821362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26312813 - 2⁸ = 26312557 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 (26312113) 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, 185231 + ... + 185372.

It is an arithmetic number, because the mean of its divisors is an integer number (6670872).

Almost surely, 2^26312813 is an apocalyptic number.

It is an amenable number.

26312813 is a deficient number, since it is larger than the sum of its proper divisors (370675).

26312813 is an equidigital number, since it uses as much as digits as its factorization.

26312813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370674.

The product of its digits is 1728, while the sum is 26.

The square root of 26312813 is about 5129.6016414533. The cubic root of 26312813 is about 297.4329599664.

The spelling of 26312813 in words is "twenty-six million, three hundred twelve thousand, eight hundred thirteen".