131443500 has 48 divisors (see below), whose sum is σ = 382767840. Its totient is φ = 35051200.

The previous prime is 131443469. The next prime is 131443513. The reversal of 131443500 is 5344131.

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, 42315 + ... + 45314.

It is an arithmetic number, because the mean of its divisors is an integer number (7974330).

Almost surely, 2^131443500 is an apocalyptic number.

131443500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131443500 is an abundant number, since it is smaller than the sum of its proper divisors (251324340).

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

131443500 is a wasteful number, since it uses less digits than its factorization.

131443500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87651 (or 87639 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 131443500 is about 11464.8811594364. The cubic root of 131443500 is about 508.4477988818.

Adding to 131443500 its reverse (5344131), we get a palindrome (136787631).

The spelling of 131443500 in words is "one hundred thirty-one million, four hundred forty-three thousand, five hundred".