131502530 has 32 divisors (see below), whose sum is σ = 245643840. Its totient is φ = 50626240.

The previous prime is 131502521. The next prime is 131502577. The reversal of 131502530 is 35205131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134945 + ... + 135915.

It is an arithmetic number, because the mean of its divisors is an integer number (7676370).

Almost surely, 2^131502530 is an apocalyptic number.

131502530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131502530 is a deficient number, since it is larger than the sum of its proper divisors (114141310).

131502530 is a wasteful number, since it uses less digits than its factorization.

131502530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 131502530 is about 11467.4552538913. The cubic root of 131502530 is about 508.5239004812.

Adding to 131502530 its reverse (35205131), we get a palindrome (166707661).

The spelling of 131502530 in words is "one hundred thirty-one million, five hundred two thousand, five hundred thirty".