11213761 has 8 divisors (see below), whose sum is σ = 12786984. Its totient is φ = 9742080.

The previous prime is 11213759. The next prime is 11213771. The reversal of 11213761 is 16731211.

11213761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 323761 + 10890000 = 569^2 + 3300^2 .

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 11213761 - 2¹ = 11213759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11213711) 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, 25150 + ... + 25591.

It is an arithmetic number, because the mean of its divisors is an integer number (1598373).

Almost surely, 2^11213761 is an apocalyptic number.

It is an amenable number.

11213761 is a deficient number, since it is larger than the sum of its proper divisors (1573223).

11213761 is a wasteful number, since it uses less digits than its factorization.

11213761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50771.

The product of its digits is 252, while the sum is 22.

The square root of 11213761 is about 3348.6954176216. The cubic root of 11213761 is about 223.8293835237.

Adding to 11213761 its reverse (16731211), we get a palindrome (27944972).

The spelling of 11213761 in words is "eleven million, two hundred thirteen thousand, seven hundred sixty-one".