3172213 has 4 divisors (see below), whose sum is σ = 3460608. Its totient is φ = 2883820.

The previous prime is 3172207. The next prime is 3172237. The reversal of 3172213 is 3122713.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3172213 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3172243) 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, 144181 + ... + 144202.

It is an arithmetic number, because the mean of its divisors is an integer number (865152).

Almost surely, 2^3172213 is an apocalyptic number.

It is an amenable number.

3172213 is a deficient number, since it is larger than the sum of its proper divisors (288395).

3172213 is a wasteful number, since it uses less digits than its factorization.

3172213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288394.

The product of its digits is 252, while the sum is 19.

The square root of 3172213 is about 1781.0707453664. The cubic root of 3172213 is about 146.9334852641.

Subtracting from 3172213 its product of digits (252), we obtain a square (3171961 = 1781²).

Adding to 3172213 its reverse (3122713), we get a palindrome (6294926).

The spelling of 3172213 in words is "three million, one hundred seventy-two thousand, two hundred thirteen".