2215321423 has 4 divisors (see below), whose sum is σ = 2531795920. Its totient is φ = 1898846928.

The previous prime is 2215321417. The next prime is 2215321447. The reversal of 2215321423 is 3241235122.

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 2215321423 - 2⁹ = 2215320911 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 (2215321403) 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, 158237238 + ... + 158237251.

It is an arithmetic number, because the mean of its divisors is an integer number (632948980).

Almost surely, 2^2215321423 is an apocalyptic number.

2215321423 is a deficient number, since it is larger than the sum of its proper divisors (316474497).

2215321423 is an equidigital number, since it uses as much as digits as its factorization.

2215321423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316474496.

The product of its digits is 2880, while the sum is 25.

The square root of 2215321423 is about 47067.2011383724. The cubic root of 2215321423 is about 1303.6036939685.

Adding to 2215321423 its reverse (3241235122), we get a palindrome (5456556545).

The spelling of 2215321423 in words is "two billion, two hundred fifteen million, three hundred twenty-one thousand, four hundred twenty-three".