3221313012 has 18 divisors (see below), whose sum is σ = 8142763538. Its totient is φ = 1073770992.

The previous prime is 3221312987. The next prime is 3221313101. The reversal of 3221313012 is 2103131223.

It can be written as a sum of positive squares in only one way, i.e., 2817061776 + 404251236 = 53076^2 + 20106^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44740423 + ... + 44740494.

Almost surely, 2^3221313012 is an apocalyptic number.

It is an amenable number.

3221313012 is an abundant number, since it is smaller than the sum of its proper divisors (4921450526).

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

3221313012 is a wasteful number, since it uses less digits than its factorization.

3221313012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89480927 (or 89480922 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3221313012 is about 56756.6120553368. The cubic root of 3221313012 is about 1476.8769382847.

Adding to 3221313012 its reverse (2103131223), we get a palindrome (5324444235).

The spelling of 3221313012 in words is "three billion, two hundred twenty-one million, three hundred thirteen thousand, twelve".