4287172131 has 40 divisors (see below), whose sum is σ = 6993389568. Its totient is φ = 2595726000.

The previous prime is 4287172121. The next prime is 4287172139. The reversal of 4287172131 is 1312717824.

4287172131 is a `hidden beast` number, since 428 + 7 + 17 + 213 + 1 = 666.

It is not a de Polignac number, because 4287172131 - 2⁷ = 4287172003 is a prime.

It is a super-2 number, since 2×4287172131² = 36759689761646162322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4287172139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1309026 + ... + 1312296.

Almost surely, 2^4287172131 is an apocalyptic number.

4287172131 is a deficient number, since it is larger than the sum of its proper divisors (2706217437).

4287172131 is a wasteful number, since it uses less digits than its factorization.

4287172131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765 (or 4756 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 4287172131 is about 65476.5006013608. The cubic root of 4287172131 is about 1624.5146802847.

Adding to 4287172131 its reverse (1312717824), we get a palindrome (5599889955).

The spelling of 4287172131 in words is "four billion, two hundred eighty-seven million, one hundred seventy-two thousand, one hundred thirty-one".