1331230032 has 160 divisors (see below), whose sum is σ = 4184434560. Its totient is φ = 401863680.

The previous prime is 1331230031. The next prime is 1331230051. The reversal of 1331230032 is 2300321331.

1331230032 is a `hidden beast` number, since 1 + 331 + 2 + 300 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1331229987 and 1331230014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331230031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2171358 + ... + 2171970.

It is an arithmetic number, because the mean of its divisors is an integer number (26152716).

Almost surely, 2^1331230032 is an apocalyptic number.

1331230032 is a gapful number since it is divisible by the number (12) 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 1331230032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2092217280).

1331230032 is an abundant number, since it is smaller than the sum of its proper divisors (2853204528).

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

1331230032 is a wasteful number, since it uses less digits than its factorization.

1331230032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098 (or 1086 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 1331230032 is about 36486.0251603268. The cubic root of 1331230032 is about 1100.0633660467.

Adding to 1331230032 its reverse (2300321331), we get a palindrome (3631551363).

The spelling of 1331230032 in words is "one billion, three hundred thirty-one million, two hundred thirty thousand, thirty-two".