7130531 has 4 divisors (see below), whose sum is σ = 7549992. Its totient is φ = 6711072.

The previous prime is 7130509. The next prime is 7130533. The reversal of 7130531 is 1350317.

It is a happy number.

7130531 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7130531 - 2¹⁴ = 7114147 is a prime.

It is a super-2 number, since 2×7130531² = 101688944683922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7130533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209705 + ... + 209738.

It is an arithmetic number, because the mean of its divisors is an integer number (1887498).

Almost surely, 2^7130531 is an apocalyptic number.

7130531 is a deficient number, since it is larger than the sum of its proper divisors (419461).

7130531 is a wasteful number, since it uses less digits than its factorization.

7130531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419460.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 7130531 is about 2670.3054132440. The cubic root of 7130531 is about 192.4748356379.

Adding to 7130531 its reverse (1350317), we get a palindrome (8480848).

The spelling of 7130531 in words is "seven million, one hundred thirty thousand, five hundred thirty-one".