131530245 has 64 divisors (see below), whose sum is σ = 263983104. Its totient is φ = 54328320.

The previous prime is 131530229. The next prime is 131530247. The reversal of 131530245 is 542035131.

It is not a de Polignac number, because 131530245 - 2⁴ = 131530229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131530247) 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 63 ways as a sum of consecutive naturals, for example, 303549 + ... + 303981.

It is an arithmetic number, because the mean of its divisors is an integer number (4124736).

Almost surely, 2^131530245 is an apocalyptic number.

131530245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131530245 is an abundant number, since it is smaller than the sum of its proper divisors (132452859).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131530245 is a wasteful number, since it uses less digits than its factorization.

131530245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 131530245 is about 11468.6636100289. The cubic root of 131530245 is about 508.5596228608.

Adding to 131530245 its reverse (542035131), we get a palindrome (673565376).

The spelling of 131530245 in words is "one hundred thirty-one million, five hundred thirty thousand, two hundred forty-five".