3013821 has 8 divisors (see below), whose sum is σ = 4464960. Its totient is φ = 2009196.

The previous prime is 3013817. The next prime is 3013841. The reversal of 3013821 is 1283103.

It is not a de Polignac number, because 3013821 - 2² = 3013817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3013794 and 3013803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3013841) 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, 55785 + ... + 55838.

It is an arithmetic number, because the mean of its divisors is an integer number (558120).

Almost surely, 2^3013821 is an apocalyptic number.

It is an amenable number.

3013821 is a deficient number, since it is larger than the sum of its proper divisors (1451139).

3013821 is a wasteful number, since it uses less digits than its factorization.

3013821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111632 (or 111626 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 3013821 is about 1736.0360019308. The cubic root of 3013821 is about 144.4460992359.

Adding to 3013821 its reverse (1283103), we get a palindrome (4296924).

The spelling of 3013821 in words is "three million, thirteen thousand, eight hundred twenty-one".