1331423264 has 48 divisors (see below), whose sum is σ = 2781656640. Its totient is φ = 625954560.

The previous prime is 1331423243. The next prime is 1331423273. The reversal of 1331423264 is 4623241331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28094 + ... + 58754.

It is an arithmetic number, because the mean of its divisors is an integer number (57951180).

Almost surely, 2^1331423264 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 1331423264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1390828320).

1331423264 is an abundant number, since it is smaller than the sum of its proper divisors (1450233376).

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

1331423264 is a wasteful number, since it uses less digits than its factorization.

1331423264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30753 (or 30745 counting only the distinct ones).

The product of its digits is 10368, while the sum is 29.

The square root of 1331423264 is about 36488.6730917966. The cubic root of 1331423264 is about 1100.1165892951.

Adding to 1331423264 its reverse (4623241331), we get a palindrome (5954664595).

The spelling of 1331423264 in words is "one billion, three hundred thirty-one million, four hundred twenty-three thousand, two hundred sixty-four".