2312215 has 4 divisors (see below), whose sum is σ = 2774664. Its totient is φ = 1849768.

The previous prime is 2312209. The next prime is 2312249. The reversal of 2312215 is 5122132.

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 2312215 - 2¹¹ = 2310167 is a prime.

It is a Duffinian number.

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, 231217 + ... + 231226.

It is an arithmetic number, because the mean of its divisors is an integer number (693666).

2^2312215 is an apocalyptic number.

2312215 is a deficient number, since it is larger than the sum of its proper divisors (462449).

2312215 is an equidigital number, since it uses as much as digits as its factorization.

2312215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462448.

The product of its digits is 120, while the sum is 16.

The square root of 2312215 is about 1520.5969222644. The cubic root of 2312215 is about 132.2338790603.

Adding to 2312215 its reverse (5122132), we get a palindrome (7434347).

The spelling of 2312215 in words is "two million, three hundred twelve thousand, two hundred fifteen".