11261813 has 4 divisors (see below), whose sum is σ = 11854560. Its totient is φ = 10669068.

The previous prime is 11261791. The next prime is 11261819. The reversal of 11261813 is 31816211.

11261813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31816211 = 7 ⋅4545173.

It is a cyclic number.

It is not a de Polignac number, because 11261813 - 2⁶ = 11261749 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 (11261819) 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, 296345 + ... + 296382.

It is an arithmetic number, because the mean of its divisors is an integer number (2963640).

Almost surely, 2^11261813 is an apocalyptic number.

It is an amenable number.

11261813 is a deficient number, since it is larger than the sum of its proper divisors (592747).

11261813 is an equidigital number, since it uses as much as digits as its factorization.

11261813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592746.

The product of its digits is 288, while the sum is 23.

The square root of 11261813 is about 3355.8624822838. The cubic root of 11261813 is about 224.1486377956.

The spelling of 11261813 in words is "eleven million, two hundred sixty-one thousand, eight hundred thirteen".