1331332432 has 40 divisors (see below), whose sum is σ = 2718109760. Its totient is φ = 629959680.

The previous prime is 1331332397. The next prime is 1331332477. The reversal of 1331332432 is 2342331331.

It is a junction number, because it is equal to n+sod(n) for n = 1331332397 and 1331332406.

It is a congruent number.

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, 394432 + ... + 397792.

It is an arithmetic number, because the mean of its divisors is an integer number (67952744).

Almost surely, 2^1331332432 is an apocalyptic number.

It is an amenable number.

1331332432 is an abundant number, since it is smaller than the sum of its proper divisors (1386777328).

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

1331332432 is a wasteful number, since it uses less digits than its factorization.

1331332432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691 (or 4685 counting only the distinct ones).

The product of its digits is 3888, while the sum is 25.

The square root of 1331332432 is about 36487.4284103443. The cubic root of 1331332432 is about 1100.0915714401.

Adding to 1331332432 its reverse (2342331331), we get a palindrome (3673663763).

The spelling of 1331332432 in words is "one billion, three hundred thirty-one million, three hundred thirty-two thousand, four hundred thirty-two".