3287921321 has 8 divisors (see below), whose sum is σ = 3346553088. Its totient is φ = 3229632000.

The previous prime is 3287921317. The next prime is 3287921339. The reversal of 3287921321 is 1231297823.

It is a happy number.

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 3287921321 - 2² = 3287921317 is a prime.

It is a super-2 number, since 2×3287921321² = 21620853226172770082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3287921381) 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, 66200 + ... + 104681.

It is an arithmetic number, because the mean of its divisors is an integer number (418319136).

Almost surely, 2^3287921321 is an apocalyptic number.

It is an amenable number.

3287921321 is a deficient number, since it is larger than the sum of its proper divisors (58631767).

3287921321 is a wasteful number, since it uses less digits than its factorization.

3287921321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171223.

The product of its digits is 36288, while the sum is 38.

The square root of 3287921321 is about 57340.3986819066. The cubic root of 3287921321 is about 1486.9868873633.

The spelling of 3287921321 in words is "three billion, two hundred eighty-seven million, nine hundred twenty-one thousand, three hundred twenty-one".