3221631140 has 48 divisors (see below), whose sum is σ = 8326682112. Its totient is φ = 1019592576.

The previous prime is 3221631131. The next prime is 3221631143. The reversal of 3221631140 is 411361223.

It is not an unprimeable number, because it can be changed into a prime (3221631143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 883244 + ... + 886883.

It is an arithmetic number, because the mean of its divisors is an integer number (173472544).

Almost surely, 2^3221631140 is an apocalyptic number.

It is an amenable number.

3221631140 is an abundant number, since it is smaller than the sum of its proper divisors (5105050972).

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

3221631140 is a wasteful number, since it uses less digits than its factorization.

3221631140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770156 (or 1770154 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 3221631140 is about 56759.4145494824. The cubic root of 3221631140 is about 1476.9255541172.

Adding to 3221631140 its reverse (411361223), we get a palindrome (3632992363).

The spelling of 3221631140 in words is "three billion, two hundred twenty-one million, six hundred thirty-one thousand, one hundred forty".