3213504240 has 80 divisors (see below), whose sum is σ = 9974361600. Its totient is φ = 855859456.

The previous prime is 3213504223. The next prime is 3213504263. The reversal of 3213504240 is 424053123.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 3213504240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193381 + ... + 209339.

It is an arithmetic number, because the mean of its divisors is an integer number (124679520).

Almost surely, 2^3213504240 is an apocalyptic number.

3213504240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3213504240 is an abundant number, since it is smaller than the sum of its proper divisors (6760857360).

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

3213504240 is a wasteful number, since it uses less digits than its factorization.

3213504240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16814 (or 16808 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 3213504240 is about 56687.7785770443. The cubic root of 3213504240 is about 1475.6826088797.

Adding to 3213504240 its reverse (424053123), we get a palindrome (3637557363).

The spelling of 3213504240 in words is "three billion, two hundred thirteen million, five hundred four thousand, two hundred forty".