131532020 has 12 divisors (see below), whose sum is σ = 276217284. Its totient is φ = 52612800.

The previous prime is 131532019. The next prime is 131532047. The reversal of 131532020 is 20235131.

It can be written as a sum of positive squares in 2 ways, for example, as 57365476 + 74166544 = 7574^2 + 8612^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131532020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3288281 + ... + 3288320.

It is an arithmetic number, because the mean of its divisors is an integer number (23018107).

Almost surely, 2^131532020 is an apocalyptic number.

131532020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131532020 is an abundant number, since it is smaller than the sum of its proper divisors (144685264).

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

131532020 is a wasteful number, since it uses less digits than its factorization.

131532020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6576610 (or 6576608 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 131532020 is about 11468.7409945469. The cubic root of 131532020 is about 508.5619105204.

Adding to 131532020 its reverse (20235131), we get a palindrome (151767151).

The spelling of 131532020 in words is "one hundred thirty-one million, five hundred thirty-two thousand, twenty".