131545020 has 24 divisors (see below), whose sum is σ = 368326224. Its totient is φ = 35078656.

The previous prime is 131545003. The next prime is 131545021. The reversal of 131545020 is 20545131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131545021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1096149 + ... + 1096268.

It is an arithmetic number, because the mean of its divisors is an integer number (15346926).

Almost surely, 2^131545020 is an apocalyptic number.

131545020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131545020 is an abundant number, since it is smaller than the sum of its proper divisors (236781204).

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

131545020 is a wasteful number, since it uses less digits than its factorization.

131545020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192429 (or 2192427 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 131545020 is about 11469.3077384819. The cubic root of 131545020 is about 508.5786645828.

The spelling of 131545020 in words is "one hundred thirty-one million, five hundred forty-five thousand, twenty".