2321191 has 4 divisors (see below), whose sum is σ = 2338272. Its totient is φ = 2304112.

The previous prime is 2321171. The next prime is 2321213. The reversal of 2321191 is 1911232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2321191 - 2⁵ = 2321159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8335 + ... + 8608.

It is an arithmetic number, because the mean of its divisors is an integer number (584568).

2^2321191 is an apocalyptic number.

2321191 is a deficient number, since it is larger than the sum of its proper divisors (17081).

2321191 is a wasteful number, since it uses less digits than its factorization.

2321191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17080.

The product of its digits is 108, while the sum is 19.

The square root of 2321191 is about 1523.5455359129. The cubic root of 2321191 is about 132.4047684047.

The spelling of 2321191 in words is "two million, three hundred twenty-one thousand, one hundred ninety-one".