3136221 has 24 divisors (see below), whose sum is σ = 5016960. Its totient is φ = 1872000.

The previous prime is 3136207. The next prime is 3136223. The reversal of 3136221 is 1226313.

It is not a de Polignac number, because 3136221 - 2⁹ = 3135709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3136194 and 3136203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3136223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7621 + ... + 8021.

It is an arithmetic number, because the mean of its divisors is an integer number (209040).

Almost surely, 2^3136221 is an apocalyptic number.

It is an amenable number.

3136221 is a deficient number, since it is larger than the sum of its proper divisors (1880739).

3136221 is a wasteful number, since it uses less digits than its factorization.

3136221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 494 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 3136221 is about 1770.9378871095. The cubic root of 3136221 is about 146.3756666984.

The spelling of 3136221 in words is "three million, one hundred thirty-six thousand, two hundred twenty-one".