2291423 has 4 divisors (see below), whose sum is σ = 2296008. Its totient is φ = 2286840.

The previous prime is 2291417. The next prime is 2291437. The reversal of 2291423 is 3241922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3241922 = 2 ⋅1620961.

It is a cyclic number.

It is not a de Polignac number, because 2291423 - 2⁸ = 2291167 is a prime.

It is a d-powerful number, because it can be written as 2 + 2³ + 9³ + 1 + 4⁷ + 2²¹ + 3¹¹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291623) 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, 1436 + ... + 2577.

It is an arithmetic number, because the mean of its divisors is an integer number (574002).

2^2291423 is an apocalyptic number.

2291423 is a deficient number, since it is larger than the sum of its proper divisors (4585).

2291423 is an equidigital number, since it uses as much as digits as its factorization.

2291423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4584.

The product of its digits is 864, while the sum is 23.

The square root of 2291423 is about 1513.7446944581. The cubic root of 2291423 is about 131.8363252942.

The spelling of 2291423 in words is "two million, two hundred ninety-one thousand, four hundred twenty-three".