2191316 has 12 divisors (see below), whose sum is σ = 3851232. Its totient is φ = 1090968.

The previous prime is 2191291. The next prime is 2191331. The reversal of 2191316 is 6131912.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2191291 and 2191300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (320936).

2^2191316 is an apocalyptic number.

It is an amenable number.

2191316 is a deficient number, since it is larger than the sum of its proper divisors (1659916).

2191316 is a wasteful number, since it uses less digits than its factorization.

2191316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350 (or 2348 counting only the distinct ones).

The product of its digits is 324, while the sum is 23.

The square root of 2191316 is about 1480.3094271131. The cubic root of 2191316 is about 129.8877927244.

The spelling of 2191316 in words is "two million, one hundred ninety-one thousand, three hundred sixteen".