131803530 has 16 divisors (see below), whose sum is σ = 316328544. Its totient is φ = 35147600.

The previous prime is 131803523. The next prime is 131803531. The reversal of 131803530 is 35308131.

It is a self number, because there is not a number n which added to its sum of digits gives 131803530.

It is not an unprimeable number, because it can be changed into a prime (131803531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2196696 + ... + 2196755.

It is an arithmetic number, because the mean of its divisors is an integer number (19770534).

Almost surely, 2^131803530 is an apocalyptic number.

131803530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131803530 is an abundant number, since it is smaller than the sum of its proper divisors (184525014).

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

131803530 is a wasteful number, since it uses less digits than its factorization.

131803530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4393461.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 131803530 is about 11480.5718498688. The cubic root of 131803530 is about 508.9115965881.

The spelling of 131803530 in words is "one hundred thirty-one million, eight hundred three thousand, five hundred thirty".