3220531040 has 48 divisors (see below), whose sum is σ = 7615445040. Its totient is φ = 1287037440.

The previous prime is 3220531037. The next prime is 3220531043. The reversal of 3220531040 is 401350223.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3220531037) and next prime (3220531043).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220531043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178766 + ... + 195954.

It is an arithmetic number, because the mean of its divisors is an integer number (158655105).

Almost surely, 2^3220531040 is an apocalyptic number.

It is an amenable number.

3220531040 is an abundant number, since it is smaller than the sum of its proper divisors (4394914000).

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

3220531040 is a wasteful number, since it uses less digits than its factorization.

3220531040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18375 (or 18367 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3220531040 is about 56749.7228187063. The cubic root of 3220531040 is about 1476.7574249196.

Adding to 3220531040 its reverse (401350223), we get a palindrome (3621881263).

The spelling of 3220531040 in words is "three billion, two hundred twenty million, five hundred thirty-one thousand, forty".