131003401440 has 48 divisors (see below), whose sum is σ = 412660716048. Its totient is φ = 34934240256.

The previous prime is 131003401381. The next prime is 131003401447. The reversal of 131003401440 is 44104300131.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131003401447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136461397 + ... + 136462356.

It is an arithmetic number, because the mean of its divisors is an integer number (8597098251).

Almost surely, 2^131003401440 is an apocalyptic number.

131003401440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131003401440 is an abundant number, since it is smaller than the sum of its proper divisors (281657314608).

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

131003401440 is a wasteful number, since it uses less digits than its factorization.

131003401440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272923771 (or 272923763 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 131003401440 its reverse (44104300131), we get a palindrome (175107701571).

The spelling of 131003401440 in words is "one hundred thirty-one billion, three million, four hundred one thousand, four hundred forty".