131450331440 has 40 divisors (see below), whose sum is σ = 305646904608. Its totient is φ = 52575851520.

The previous prime is 131450331437. The next prime is 131450331451. The reversal of 131450331440 is 44133054131.

It is a happy number.

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

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, 1034429 + ... + 1154531.

Almost surely, 2^131450331440 is an apocalyptic number.

131450331440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131450331440 is an abundant number, since it is smaller than the sum of its proper divisors (174196573168).

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

131450331440 is a wasteful number, since it uses less digits than its factorization.

131450331440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133797 (or 133791 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 131450331440 its reverse (44133054131), we get a palindrome (175583385571).

The spelling of 131450331440 in words is "one hundred thirty-one billion, four hundred fifty million, three hundred thirty-one thousand, four hundred forty".