131424235520 has 104 divisors (see below), whose sum is σ = 316051242144. Its totient is φ = 52457766912.

The previous prime is 131424235507. The next prime is 131424235543. The reversal of 131424235520 is 25532424131.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9967172 + ... + 9980348.

Almost surely, 2^131424235520 is an apocalyptic number.

131424235520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131424235520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158025621072).

131424235520 is an abundant number, since it is smaller than the sum of its proper divisors (184627006624).

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

131424235520 is an equidigital number, since it uses as much as digits as its factorization.

131424235520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13693 (or 13671 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 131424235520 its reverse (25532424131), we get a palindrome (156956659651).

The spelling of 131424235520 in words is "one hundred thirty-one billion, four hundred twenty-four million, two hundred thirty-five thousand, five hundred twenty".