11530999 has 2 divisors, whose sum is σ = 11531000. Its totient is φ = 11530998.

The previous prime is 11530997. The next prime is 11531011. The reversal of 11530999 is 99903511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11530999 - 2¹ = 11530997 is a prime.

Together with 11530997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11530991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5765499 + 5765500.

It is an arithmetic number, because the mean of its divisors is an integer number (5765500).

Almost surely, 2^11530999 is an apocalyptic number.

11530999 is a deficient number, since it is larger than the sum of its proper divisors (1).

11530999 is an equidigital number, since it uses as much as digits as its factorization.

11530999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10935, while the sum is 37.

The square root of 11530999 is about 3395.7324688497. The cubic root of 11530999 is about 225.9205022294.

The spelling of 11530999 in words is "eleven million, five hundred thirty thousand, nine hundred ninety-nine".