11530391 has 2 divisors, whose sum is σ = 11530392. Its totient is φ = 11530390.

The previous prime is 11530381. The next prime is 11530417. The reversal of 11530391 is 19303511.

11530391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11530391 - 2⁶ = 11530327 is a prime.

It is a super-2 number, since 2×11530391² = 265899833225762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11530381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5765195 + 5765196.

It is an arithmetic number, because the mean of its divisors is an integer number (5765196).

Almost surely, 2^11530391 is an apocalyptic number.

11530391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11530391 is an equidigital number, since it uses as much as digits as its factorization.

11530391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 11530391 is about 3395.6429435381. The cubic root of 11530391 is about 225.9165314235.

The spelling of 11530391 in words is "eleven million, five hundred thirty thousand, three hundred ninety-one".