1331225304 has 64 divisors (see below), whose sum is σ = 3413836800. Its totient is φ = 432356736.

The previous prime is 1331225293. The next prime is 1331225353. The reversal of 1331225304 is 4035221331.

1331225304 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492982 + ... + 495674.

It is an arithmetic number, because the mean of its divisors is an integer number (53341200).

Almost surely, 2^1331225304 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 1331225304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1706918400).

1331225304 is an abundant number, since it is smaller than the sum of its proper divisors (2082611496).

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

1331225304 is a wasteful number, since it uses less digits than its factorization.

1331225304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224 (or 3220 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1331225304 is about 36485.9603683389. The cubic root of 1331225304 is about 1100.0620637158.

Adding to 1331225304 its reverse (4035221331), we get a palindrome (5366446635).

The spelling of 1331225304 in words is "one billion, three hundred thirty-one million, two hundred twenty-five thousand, three hundred four".