131603736 has 64 divisors (see below), whose sum is σ = 367297920. Its totient is φ = 38949120.

The previous prime is 131603701. The next prime is 131603737. The reversal of 131603736 is 637306131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131603737) 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 15 ways as a sum of consecutive naturals, for example, 5556 + ... + 17148.

It is an arithmetic number, because the mean of its divisors is an integer number (5739030).

Almost surely, 2^131603736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131603736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183648960).

131603736 is an abundant number, since it is smaller than the sum of its proper divisors (235694184).

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

131603736 is a wasteful number, since it uses less digits than its factorization.

131603736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11656 (or 11652 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 131603736 is about 11471.8671540425. The cubic root of 131603736 is about 508.6543224906.

Adding to 131603736 its reverse (637306131), we get a palindrome (768909867).

The spelling of 131603736 in words is "one hundred thirty-one million, six hundred three thousand, seven hundred thirty-six".