131041520 has 20 divisors (see below), whose sum is σ = 304671720. Its totient is φ = 52416576.

The previous prime is 131041513. The next prime is 131041523. The reversal of 131041520 is 25140131.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131041523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818930 + ... + 819089.

It is an arithmetic number, because the mean of its divisors is an integer number (15233586).

Almost surely, 2^131041520 is an apocalyptic number.

131041520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131041520 is an abundant number, since it is smaller than the sum of its proper divisors (173630200).

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

131041520 is a wasteful number, since it uses less digits than its factorization.

131041520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638032 (or 1638026 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 131041520 is about 11447.3368081838. The cubic root of 131041520 is about 507.9289585903.

Adding to 131041520 its reverse (25140131), we get a palindrome (156181651).

The spelling of 131041520 in words is "one hundred thirty-one million, forty-one thousand, five hundred twenty".