1231224 has 48 divisors (see below), whose sum is σ = 3240120. Its totient is φ = 389760.

The previous prime is 1231207. The next prime is 1231229. The reversal of 1231224 is 4221321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20154 + ... + 20214.

2^1231224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1620060).

1231224 is an abundant number, since it is smaller than the sum of its proper divisors (2008896).

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

1231224 is a wasteful number, since it uses less digits than its factorization.

1231224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 95 counting only the distinct ones).

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

The square root of 1231224 is about 1109.6053352431. The cubic root of 1231224 is about 107.1796556774.

Adding to 1231224 its reverse (4221321), we get a palindrome (5452545).

The spelling of 1231224 in words is "one million, two hundred thirty-one thousand, two hundred twenty-four".