131051043440 has 40 divisors (see below), whose sum is σ = 305510618688. Its totient is φ = 52279868160.

The previous prime is 131051043439. The next prime is 131051043451. The reversal of 131051043440 is 44340150131.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2166056 + ... + 2225735.

Almost surely, 2^131051043440 is an apocalyptic number.

131051043440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131051043440 is an abundant number, since it is smaller than the sum of its proper divisors (174459575248).

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

131051043440 is a wasteful number, since it uses less digits than its factorization.

131051043440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392177 (or 4392171 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 131051043440 its reverse (44340150131), we get a palindrome (175391193571).

The spelling of 131051043440 in words is "one hundred thirty-one billion, fifty-one million, forty-three thousand, four hundred forty".