131343020 has 24 divisors (see below), whose sum is σ = 292045824. Its totient is φ = 49446656.

The previous prime is 131342993. The next prime is 131343031. The reversal of 131343020 is 20343131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 131343020.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 192812 + ... + 193491.

It is an arithmetic number, because the mean of its divisors is an integer number (12168576).

Almost surely, 2^131343020 is an apocalyptic number.

131343020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131343020 is an abundant number, since it is smaller than the sum of its proper divisors (160702804).

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

131343020 is a wasteful number, since it uses less digits than its factorization.

131343020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386329 (or 386327 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 131343020 is about 11460.4982439683. The cubic root of 131343020 is about 508.3182074391.

Adding to 131343020 its reverse (20343131), we get a palindrome (151686151).

The spelling of 131343020 in words is "one hundred thirty-one million, three hundred forty-three thousand, twenty".