3811221232 has 80 divisors (see below), whose sum is σ = 9160302592. Its totient is φ = 1495791360.

The previous prime is 3811221217. The next prime is 3811221299. The reversal of 3811221232 is 2321221183.

It is a junction number, because it is equal to n+sod(n) for n = 3811221197 and 3811221206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174607 + ... + 195217.

Almost surely, 2^3811221232 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 3811221232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4580151296).

3811221232 is an abundant number, since it is smaller than the sum of its proper divisors (5349081360).

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

3811221232 is a wasteful number, since it uses less digits than its factorization.

3811221232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20766 (or 20760 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 3811221232 is about 61735.0891470969. The cubic root of 3811221232 is about 1562.0252613158.

The spelling of 3811221232 in words is "three billion, eight hundred eleven million, two hundred twenty-one thousand, two hundred thirty-two".