3221131309 has 8 divisors (see below), whose sum is σ = 3514508928. Its totient is φ = 2927844960.

The previous prime is 3221131307. The next prime is 3221131363. The reversal of 3221131309 is 9031311223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3221131309 - 2¹ = 3221131307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221131307) 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, 66049 + ... + 103945.

It is an arithmetic number, because the mean of its divisors is an integer number (439313616).

Almost surely, 2^3221131309 is an apocalyptic number.

It is an amenable number.

3221131309 is a deficient number, since it is larger than the sum of its proper divisors (293377619).

3221131309 is a wasteful number, since it uses less digits than its factorization.

3221131309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45635.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 3221131309 is about 56755.0113117776. The cubic root of 3221131309 is about 1476.8491692751.

The spelling of 3221131309 in words is "three billion, two hundred twenty-one million, one hundred thirty-one thousand, three hundred nine".