3216320140 has 96 divisors (see below), whose sum is σ = 7506938880. Its totient is φ = 1147737600.

The previous prime is 3216320137. The next prime is 3216320141. The reversal of 3216320140 is 410236123.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (3216320141) 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, 4351891 + ... + 4352629.

It is an arithmetic number, because the mean of its divisors is an integer number (78197280).

Almost surely, 2^3216320140 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 3216320140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3753469440).

3216320140 is an abundant number, since it is smaller than the sum of its proper divisors (4290618740).

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

3216320140 is a wasteful number, since it uses less digits than its factorization.

3216320140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 3216320140 is about 56712.6100616080. The cubic root of 3216320140 is about 1476.1135155778.

Adding to 3216320140 its reverse (410236123), we get a palindrome (3626556263).

The spelling of 3216320140 in words is "three billion, two hundred sixteen million, three hundred twenty thousand, one hundred forty".