11780213 has 4 divisors (see below), whose sum is σ = 11894688. Its totient is φ = 11665740.

The previous prime is 11780207. The next prime is 11780227. The reversal of 11780213 is 31208711.

It is a happy number.

11780213 is digitally balanced in base 2, 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: 31208711 = 853 ⋅36587.

It is a cyclic number.

It is not a de Polignac number, because 11780213 - 2⁶ = 11780149 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 (11780233) 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, 57083 + ... + 57288.

It is an arithmetic number, because the mean of its divisors is an integer number (2973672).

Almost surely, 2^11780213 is an apocalyptic number.

It is an amenable number.

11780213 is a deficient number, since it is larger than the sum of its proper divisors (114475).

11780213 is a wasteful number, since it uses less digits than its factorization.

11780213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114474.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 11780213 is about 3432.2314898620. The cubic root of 11780213 is about 227.5364865201.

Adding to 11780213 its reverse (31208711), we get a palindrome (42988924).

The spelling of 11780213 in words is "eleven million, seven hundred eighty thousand, two hundred thirteen".