11423813 has 8 divisors (see below), whose sum is σ = 12127320. Its totient is φ = 10723840.

The previous prime is 11423761. The next prime is 11423821. The reversal of 11423813 is 31832411.

It can be written as a sum of positive squares in 4 ways, for example, as 3678724 + 7745089 = 1918^2 + 2783^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11423813 - 2⁶ = 11423749 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 (11423873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9083 + ... + 10263.

It is an arithmetic number, because the mean of its divisors is an integer number (1515915).

Almost surely, 2^11423813 is an apocalyptic number.

It is an amenable number.

11423813 is a deficient number, since it is larger than the sum of its proper divisors (703507).

11423813 is a wasteful number, since it uses less digits than its factorization.

11423813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767.

The product of its digits is 576, while the sum is 23.

The square root of 11423813 is about 3379.9131645650. The cubic root of 11423813 is about 225.2183099234.

The spelling of 11423813 in words is "eleven million, four hundred twenty-three thousand, eight hundred thirteen".