2331216 has 30 divisors (see below), whose sum is σ = 6524570. Its totient is φ = 777024.

The previous prime is 2331191. The next prime is 2331253. The reversal of 2331216 is 6121332.

It can be written as a sum of positive squares in only one way, i.e., 1971216 + 360000 = 1404^2 + 600^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7951 + ... + 8238.

2^2331216 is an apocalyptic number.

It is an amenable number.

2331216 is an abundant number, since it is smaller than the sum of its proper divisors (4193354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2331216 is a wasteful number, since it uses less digits than its factorization.

2331216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16203 (or 16194 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 2331216 is about 1526.8320143356. The cubic root of 2331216 is about 132.5951091199.

Adding to 2331216 its reverse (6121332), we get a palindrome (8452548).

The spelling of 2331216 in words is "two million, three hundred thirty-one thousand, two hundred sixteen".