11931219 has 10 divisors (see below), whose sum is σ = 17823300. Its totient is φ = 7954092.

The previous prime is 11931203. The next prime is 11931223. The reversal of 11931219 is 91213911.

11931219 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11931219 - 2⁴ = 11931203 is a prime.

It is a super-2 number, since 2×11931219² = 284707973651922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 11931192 and 11931201.

It is not an unprimeable number, because it can be changed into a prime (11931289) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 73569 + ... + 73730.

It is an arithmetic number, because the mean of its divisors is an integer number (1782330).

Almost surely, 2^11931219 is an apocalyptic number.

11931219 is a deficient number, since it is larger than the sum of its proper divisors (5892081).

11931219 is an equidigital number, since it uses as much as digits as its factorization.

11931219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147311 (or 147302 counting only the distinct ones).

The product of its digits is 486, while the sum is 27.

The square root of 11931219 is about 3454.1596662575. The cubic root of 11931219 is about 228.5045957320.

The spelling of 11931219 in words is "eleven million, nine hundred thirty-one thousand, two hundred nineteen".