7172500131 has 16 divisors (see below), whose sum is σ = 10655539200. Its totient is φ = 4768340904.

The previous prime is 7172500129. The next prime is 7172500157. The reversal of 7172500131 is 1310052717.

It is a happy number.

7172500131 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7172500131 - 2¹ = 7172500129 is a prime.

It is a super-2 number, since 2×7172500131² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 7172500095 and 7172500104.

It is not an unprimeable number, because it can be changed into a prime (7172500031) 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 15 ways as a sum of consecutive naturals, for example, 360291 + ... + 379676.

It is an arithmetic number, because the mean of its divisors is an integer number (665971200).

Almost surely, 2^7172500131 is an apocalyptic number.

7172500131 is a deficient number, since it is larger than the sum of its proper divisors (3483039069).

7172500131 is a wasteful number, since it uses less digits than its factorization.

7172500131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740335 (or 740329 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 7172500131 is about 84690.6141848080. The cubic root of 7172500131 is about 1928.5172223142.

Adding to 7172500131 its reverse (1310052717), we get a palindrome (8482552848).

The spelling of 7172500131 in words is "seven billion, one hundred seventy-two million, five hundred thousand, one hundred thirty-one".