131503103440 has 160 divisors (see below), whose sum is σ = 316024416000. Its totient is φ = 50868178944.

The previous prime is 131503103419. The next prime is 131503103467. The reversal of 131503103440 is 44301305131.

131503103440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 96197637 + ... + 96199003.

It is an arithmetic number, because the mean of its divisors is an integer number (1975152600).

Almost surely, 2^131503103440 is an apocalyptic number.

131503103440 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 131503103440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158012208000).

131503103440 is an abundant number, since it is smaller than the sum of its proper divisors (184521312560).

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

131503103440 is a wasteful number, since it uses less digits than its factorization.

131503103440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757 (or 1751 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 131503103440 its reverse (44301305131), we get a palindrome (175804408571).

The spelling of 131503103440 in words is "one hundred thirty-one billion, five hundred three million, one hundred three thousand, four hundred forty".