3621131 has 4 divisors (see below), whose sum is σ = 3645264. Its totient is φ = 3597000.

The previous prime is 3621127. The next prime is 3621139. The reversal of 3621131 is 1311263.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3621131 - 2² = 3621127 is a prime.

It is a super-2 number, since 2×3621131² = 26225179438322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3621139) 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, 11840 + ... + 12141.

It is an arithmetic number, because the mean of its divisors is an integer number (911316).

Almost surely, 2^3621131 is an apocalyptic number.

3621131 is a deficient number, since it is larger than the sum of its proper divisors (24133).

3621131 is a wasteful number, since it uses less digits than its factorization.

3621131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24132.

The product of its digits is 108, while the sum is 17.

The square root of 3621131 is about 1902.9269560338. The cubic root of 3621131 is about 153.5611699037.

Adding to 3621131 its reverse (1311263), we get a palindrome (4932394).

The spelling of 3621131 in words is "three million, six hundred twenty-one thousand, one hundred thirty-one".