3172239 has 24 divisors (see below), whose sum is σ = 5363072. Its totient is φ = 1769040.

The previous prime is 3172237. The next prime is 3172243. The reversal of 3172239 is 9322713.

It is not a de Polignac number, because 3172239 - 2¹ = 3172237 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3172237) 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, 2124 + ... + 3294.

Almost surely, 2^3172239 is an apocalyptic number.

3172239 is a deficient number, since it is larger than the sum of its proper divisors (2190833).

3172239 is a wasteful number, since it uses less digits than its factorization.

3172239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1224 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 3172239 is about 1781.0780443316. The cubic root of 3172239 is about 146.9338866937.

It can be divided in two parts, 317 and 2239, that added together give a triangular number (2556 = T₇₁).

The spelling of 3172239 in words is "three million, one hundred seventy-two thousand, two hundred thirty-nine".