3312921 has 4 divisors (see below), whose sum is σ = 4417232. Its totient is φ = 2208612.

The previous prime is 3312919. The next prime is 3312929. The reversal of 3312921 is 1292133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3312921 - 2¹ = 3312919 is a prime.

It is a D-number.

It is a Duffinian number.

3312921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3312929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552151 + ... + 552156.

It is an arithmetic number, because the mean of its divisors is an integer number (1104308).

Almost surely, 2^3312921 is an apocalyptic number.

It is an amenable number.

3312921 is a deficient number, since it is larger than the sum of its proper divisors (1104311).

3312921 is a wasteful number, since it uses less digits than its factorization.

3312921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104310.

The product of its digits is 324, while the sum is 21.

The square root of 3312921 is about 1820.1431262404. The cubic root of 3312921 is about 149.0746139217.

The spelling of 3312921 in words is "three million, three hundred twelve thousand, nine hundred twenty-one".