2327991 has 8 divisors (see below), whose sum is σ = 3239040. Its totient is φ = 1484472.

The previous prime is 2327989. The next prime is 2327993. The reversal of 2327991 is 1997232.

It is an interprime number because it is at equal distance from previous prime (2327989) and next prime (2327993).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2327991 - 2¹ = 2327989 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2327993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16801 + ... + 16938.

It is an arithmetic number, because the mean of its divisors is an integer number (404880).

2^2327991 is an apocalyptic number.

2327991 is a deficient number, since it is larger than the sum of its proper divisors (911049).

2327991 is a wasteful number, since it uses less digits than its factorization.

2327991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33765.

The product of its digits is 6804, while the sum is 33.

The square root of 2327991 is about 1525.7755405039. The cubic root of 2327991 is about 132.5339369579.

The spelling of 2327991 in words is "two million, three hundred twenty-seven thousand, nine hundred ninety-one".