131341520 has 40 divisors (see below), whose sum is σ = 306408960. Its totient is φ = 52357760.

The previous prime is 131341501. The next prime is 131341531. The reversal of 131341520 is 25143131.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 131341492 and 131341501.

It is a congruent number.

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, 22241 + ... + 27519.

It is an arithmetic number, because the mean of its divisors is an integer number (7660224).

Almost surely, 2^131341520 is an apocalyptic number.

131341520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131341520 is an abundant number, since it is smaller than the sum of its proper divisors (175067440).

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

131341520 is a wasteful number, since it uses less digits than its factorization.

131341520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5603 (or 5597 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 131341520 is about 11460.4328016005. The cubic root of 131341520 is about 508.3162723528.

Adding to 131341520 its reverse (25143131), we get a palindrome (156484651).

The spelling of 131341520 in words is "one hundred thirty-one million, three hundred forty-one thousand, five hundred twenty".