3213321312 has 48 divisors (see below), whose sum is σ = 8594132400. Its totient is φ = 1050895872.

The previous prime is 3213321299. The next prime is 3213321313. The reversal of 3213321312 is 2131233123.

3213321312 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213321313) 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, 310687 + ... + 320862.

It is an arithmetic number, because the mean of its divisors is an integer number (179044425).

Almost surely, 2^3213321312 is an apocalyptic number.

3213321312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3213321312 is an abundant number, since it is smaller than the sum of its proper divisors (5380811088).

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

3213321312 is a wasteful number, since it uses less digits than its factorization.

3213321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631615 (or 631607 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 3213321312 is about 56686.1650846130. The cubic root of 3213321312 is about 1475.6546073824.

Adding to 3213321312 its reverse (2131233123), we get a palindrome (5344554435).

The spelling of 3213321312 in words is "three billion, two hundred thirteen million, three hundred twenty-one thousand, three hundred twelve".