3228131 has 4 divisors (see below), whose sum is σ = 3251832. Its totient is φ = 3204432.

The previous prime is 3228109. The next prime is 3228143. The reversal of 3228131 is 1318223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1318223 = 181 ⋅7283.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3228131 is a prime.

It is a super-2 number, since 2×3228131² = 20841659506322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3228151) 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, 11645 + ... + 11918.

It is an arithmetic number, because the mean of its divisors is an integer number (812958).

Almost surely, 2^3228131 is an apocalyptic number.

3228131 is a deficient number, since it is larger than the sum of its proper divisors (23701).

3228131 is a wasteful number, since it uses less digits than its factorization.

3228131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23700.

The product of its digits is 288, while the sum is 20.

The square root of 3228131 is about 1796.7000306117. The cubic root of 3228131 is about 147.7918152799.

The spelling of 3228131 in words is "three million, two hundred twenty-eight thousand, one hundred thirty-one".