2215252331 has 4 divisors (see below), whose sum is σ = 2218763664. Its totient is φ = 2211741000.

The previous prime is 2215252297. The next prime is 2215252357. The reversal of 2215252331 is 1332525122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1332525122 = 2 ⋅666262561.

It is a cyclic number.

It is not a de Polignac number, because 2215252331 - 2⁶ = 2215252267 is a prime.

It is a super-2 number, since 2×2215252331² = 9814685780001867122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2215252331.

It is not an unprimeable number, because it can be changed into a prime (2215252231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1754720 + ... + 1755981.

It is an arithmetic number, because the mean of its divisors is an integer number (554690916).

Almost surely, 2^2215252331 is an apocalyptic number.

2215252331 is a deficient number, since it is larger than the sum of its proper divisors (3511333).

2215252331 is an equidigital number, since it uses as much as digits as its factorization.

2215252331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3511332.

The product of its digits is 3600, while the sum is 26.

The square root of 2215252331 is about 47066.4671608142. The cubic root of 2215252331 is about 1303.5901414547.

Adding to 2215252331 its reverse (1332525122), we get a palindrome (3547777453).

The spelling of 2215252331 in words is "two billion, two hundred fifteen million, two hundred fifty-two thousand, three hundred thirty-one".