3121224 has 16 divisors (see below), whose sum is σ = 7803120. Its totient is φ = 1040400.

The previous prime is 3121219. The next prime is 3121229. The reversal of 3121224 is 4221213.

It is an interprime number because it is at equal distance from previous prime (3121219) and next prime (3121229).

It is a hoax number, since the sum of its digits (15) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (3121229) 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, 65002 + ... + 65049.

It is an arithmetic number, because the mean of its divisors is an integer number (487695).

Almost surely, 2^3121224 is an apocalyptic number.

It is an amenable number.

3121224 is an abundant number, since it is smaller than the sum of its proper divisors (4681896).

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

3121224 is a wasteful number, since it uses less digits than its factorization.

3121224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130060 (or 130056 counting only the distinct ones).

The product of its digits is 96, while the sum is 15.

The square root of 3121224 is about 1766.6986160633. The cubic root of 3121224 is about 146.1419773585.

Adding to 3121224 its reverse (4221213), we get a palindrome (7342437).

The spelling of 3121224 in words is "three million, one hundred twenty-one thousand, two hundred twenty-four".