11391019 has 2 divisors, whose sum is σ = 11391020. Its totient is φ = 11391018.

The previous prime is 11391007. The next prime is 11391031. The reversal of 11391019 is 91019311.

11391019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (11391007) and next prime (11391031).

It is an emirp because it is prime and its reverse (91019311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11391019 - 2¹³ = 11382827 is a prime.

It is a super-2 number, since 2×11391019² = 259510627716722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11390984 and 11391002.

It is not a weakly prime, because it can be changed into another prime (11391119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5695509 + 5695510.

It is an arithmetic number, because the mean of its divisors is an integer number (5695510).

Almost surely, 2^11391019 is an apocalyptic number.

11391019 is a deficient number, since it is larger than the sum of its proper divisors (1).

11391019 is an equidigital number, since it uses as much as digits as its factorization.

11391019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243, while the sum is 25.

The square root of 11391019 is about 3375.0583698656. The cubic root of 11391019 is about 225.0025942088.

The spelling of 11391019 in words is "eleven million, three hundred ninety-one thousand, nineteen".