3141921 has 4 divisors (see below), whose sum is σ = 4189232. Its totient is φ = 2094612.

The previous prime is 3141913. The next prime is 3141937. The reversal of 3141921 is 1291413.

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 3141921 - 2³ = 3141913 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3141911) 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, 523651 + ... + 523656.

It is an arithmetic number, because the mean of its divisors is an integer number (1047308).

Almost surely, 2^3141921 is an apocalyptic number.

It is an amenable number.

3141921 is a deficient number, since it is larger than the sum of its proper divisors (1047311).

3141921 is a wasteful number, since it uses less digits than its factorization.

3141921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047310.

The product of its digits is 216, while the sum is 21.

The square root of 3141921 is about 1772.5464732977. The cubic root of 3141921 is about 146.4642910168.

The spelling of 3141921 in words is "three million, one hundred forty-one thousand, nine hundred twenty-one".