4031145 has 24 divisors (see below), whose sum is σ = 7230600. Its totient is φ = 2075136.

The previous prime is 4031129. The next prime is 4031177. The reversal of 4031145 is 5411304.

It is a happy number.

4031145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1218816 + 2812329 = 1104^2 + 1677^2 .

It is not a de Polignac number, because 4031145 - 2⁴ = 4031129 is a prime.

It is a super-2 number, since 2×4031145² = 32500260022050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240 + ... + 2849.

It is an arithmetic number, because the mean of its divisors is an integer number (301275).

Almost surely, 2^4031145 is an apocalyptic number.

4031145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4031145 is a deficient number, since it is larger than the sum of its proper divisors (3199455).

4031145 is a wasteful number, since it uses less digits than its factorization.

4031145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129 (or 3126 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 4031145 is about 2007.7711522980. The cubic root of 4031145 is about 159.1510372100.

Adding to 4031145 its reverse (5411304), we get a palindrome (9442449).

The spelling of 4031145 in words is "four million, thirty-one thousand, one hundred forty-five".