1331232000 has 432 divisors, whose sum is σ = 5161770432. Its totient is φ = 303206400.

The previous prime is 1331231939. The next prime is 1331232011. The reversal of 1331232000 is 2321331.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4703859 + ... + 4704141.

Almost surely, 2^1331232000 is an apocalyptic number.

1331232000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331232000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2580885216).

1331232000 is an abundant number, since it is smaller than the sum of its proper divisors (3830538432).

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

1331232000 is an equidigital number, since it uses as much as digits as its factorization.

1331232000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1331232000 is about 36486.0521295467. The cubic root of 1331232000 is about 1100.0639081327.

Adding to 1331232000 its reverse (2321331), we get a palindrome (1333553331).

The spelling of 1331232000 in words is "one billion, three hundred thirty-one million, two hundred thirty-two thousand".