1331232224 has 24 divisors (see below), whose sum is σ = 2995273008. Its totient is φ = 570528000.

The previous prime is 1331232197. The next prime is 1331232229. The reversal of 1331232224 is 4222321331.

1331232224 = 245² + 246² + ... + 1588².

It is a self number, because there is not a number n which added to its sum of digits gives 1331232224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331232229) 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, 2971277 + ... + 2971724.

It is an arithmetic number, because the mean of its divisors is an integer number (124803042).

Almost surely, 2^1331232224 is an apocalyptic number.

1331232224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1331232224 is an abundant number, since it is smaller than the sum of its proper divisors (1664040784).

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

1331232224 is an equidigital number, since it uses as much as digits as its factorization.

1331232224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5943018 (or 5943010 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 1331232224 is about 36486.0551992128. The cubic root of 1331232224 is about 1100.0639698335.

Adding to 1331232224 its reverse (4222321331), we get a palindrome (5553553555).

The spelling of 1331232224 in words is "one billion, three hundred thirty-one million, two hundred thirty-two thousand, two hundred twenty-four".