131510530 has 16 divisors (see below), whose sum is σ = 238815864. Its totient is φ = 52138240.

The previous prime is 131510513. The next prime is 131510537. The reversal of 131510530 is 35015131.

It can be written as a sum of positive squares in 4 ways, for example, as 109014481 + 22496049 = 10441^2 + 4743^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131510498 and 131510507.

It is not an unprimeable number, because it can be changed into a prime (131510537) 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 7 ways as a sum of consecutive naturals, for example, 57061 + ... + 59320.

Almost surely, 2^131510530 is an apocalyptic number.

131510530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131510530 is a deficient number, since it is larger than the sum of its proper divisors (107305334).

131510530 is a wasteful number, since it uses less digits than its factorization.

131510530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116501.

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

The square root of 131510530 is about 11467.8040618071. The cubic root of 131510530 is about 508.5342123454.

Adding to 131510530 its reverse (35015131), we get a palindrome (166525661).

The spelling of 131510530 in words is "one hundred thirty-one million, five hundred ten thousand, five hundred thirty".