4031172 has 18 divisors (see below), whose sum is σ = 10189998. Its totient is φ = 1343712.

The previous prime is 4031129. The next prime is 4031177. The reversal of 4031172 is 2711304.

It can be written as a sum of positive squares in only one way, i.e., 2143296 + 1887876 = 1464^2 + 1374^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4031177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55953 + ... + 56024.

It is an arithmetic number, because the mean of its divisors is an integer number (566111).

Almost surely, 2^4031172 is an apocalyptic number.

It is an amenable number.

4031172 is an abundant number, since it is smaller than the sum of its proper divisors (6158826).

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

4031172 is a wasteful number, since it uses less digits than its factorization.

4031172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111987 (or 111982 counting only the distinct ones).

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

The square root of 4031172 is about 2007.7778761606. Note that the first 3 decimals coincide. The cubic root of 4031172 is about 159.1513925324.

Adding to 4031172 its reverse (2711304), we get a palindrome (6742476).

The spelling of 4031172 in words is "four million, thirty-one thousand, one hundred seventy-two".