130531015 has 32 divisors (see below), whose sum is σ = 172440576. Its totient is φ = 94456320.

The previous prime is 130531013. The next prime is 130531019. The reversal of 130531015 is 510135031.

It is not a de Polignac number, because 130531015 - 2¹ = 130531013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130530983 and 130531001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130531013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 259254 + ... + 259756.

It is an arithmetic number, because the mean of its divisors is an integer number (5388768).

Almost surely, 2^130531015 is an apocalyptic number.

130531015 is a deficient number, since it is larger than the sum of its proper divisors (41909561).

130531015 is a wasteful number, since it uses less digits than its factorization.

130531015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 130531015 is about 11425.0170678209. The cubic root of 130531015 is about 507.2685121234.

Adding to 130531015 its reverse (510135031), we get a palindrome (640666046).

The spelling of 130531015 in words is "one hundred thirty million, five hundred thirty-one thousand, fifteen".