11919371 has 2 divisors, whose sum is σ = 11919372. Its totient is φ = 11919370.

The previous prime is 11919361. The next prime is 11919373. The reversal of 11919371 is 17391911.

It is a strong prime.

It is an emirp because it is prime and its reverse (17391911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11919371 - 2¹⁸ = 11657227 is a prime.

It is a super-3 number, since 3×11919371³ (a number of 22 digits) contains 333 as substring.

Together with 11919373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11919373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5959685 + 5959686.

It is an arithmetic number, because the mean of its divisors is an integer number (5959686).

Almost surely, 2^11919371 is an apocalyptic number.

11919371 is a deficient number, since it is larger than the sum of its proper divisors (1).

11919371 is an equidigital number, since it uses as much as digits as its factorization.

11919371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1701, while the sum is 32.

The square root of 11919371 is about 3452.4442066455. Note that the first 3 decimals coincide. The cubic root of 11919371 is about 228.4289337483.

Adding to 11919371 its sum of digits (32), we get a triangular number (11919403 = T₄₈₈₂).

The spelling of 11919371 in words is "eleven million, nine hundred nineteen thousand, three hundred seventy-one".