3172122 has 48 divisors (see below), whose sum is σ = 7312032. Its totient is φ = 1030320.

The previous prime is 3172097. The next prime is 3172123. The reversal of 3172122 is 2212713.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3172095 and 3172104.

It is not an unprimeable number, because it can be changed into a prime (3172123) 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, 29593 + ... + 29699.

It is an arithmetic number, because the mean of its divisors is an integer number (152334).

Almost surely, 2^3172122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3172122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3656016).

3172122 is an abundant number, since it is smaller than the sum of its proper divisors (4139910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3172122 is a wasteful number, since it uses less digits than its factorization.

3172122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 173 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 3172122 is about 1781.0451987527. The cubic root of 3172122 is about 146.9320802434.

Adding to 3172122 its reverse (2212713), we get a palindrome (5384835).

The spelling of 3172122 in words is "three million, one hundred seventy-two thousand, one hundred twenty-two".