3221323540 has 24 divisors (see below), whose sum is σ = 7162708392. Its totient is φ = 1212733440.

The previous prime is 3221323519. The next prime is 3221323561. The reversal of 3221323540 is 453231223.

It is an interprime number because it is at equal distance from previous prime (3221323519) and next prime (3221323561).

It can be written as a sum of positive squares in 4 ways, for example, as 1214104336 + 2007219204 = 34844^2 + 44802^2 .

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, 4736901 + ... + 4737580.

It is an arithmetic number, because the mean of its divisors is an integer number (298446183).

Almost surely, 2^3221323540 is an apocalyptic number.

It is an amenable number.

3221323540 is an abundant number, since it is smaller than the sum of its proper divisors (3941384852).

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

3221323540 is a wasteful number, since it uses less digits than its factorization.

3221323540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9474507 (or 9474505 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 3221323540 is about 56756.7048021641. The cubic root of 3221323540 is about 1476.8785472087.

Adding to 3221323540 its reverse (453231223), we get a palindrome (3674554763).

The spelling of 3221323540 in words is "three billion, two hundred twenty-one million, three hundred twenty-three thousand, five hundred forty".