131402321043440 has 40 divisors (see below), whose sum is σ = 305554375031760. Its totient is φ = 52553362205696.

The previous prime is 131402321043403. The next prime is 131402321043443. The reversal of 131402321043440 is 44340123204131.

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

It is a junction number, because it is equal to n+sod(n) for n = 131402321043397 and 131402321043406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131402321043443) 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, 117662825 + ... + 118774344.

It is an arithmetic number, because the mean of its divisors is an integer number (7638859375794).

Almost surely, 2^{131402321043440} is an apocalyptic number.

131402321043440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131402321043440 is an abundant number, since it is smaller than the sum of its proper divisors (174152053988320).

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

131402321043440 is a wasteful number, since it uses less digits than its factorization.

131402321043440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236444129 (or 236444123 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 131402321043440 its reverse (44340123204131), we get a palindrome (175742444247571).

The spelling of 131402321043440 in words is "one hundred thirty-one trillion, four hundred two billion, three hundred twenty-one million, forty-three thousand, four hundred forty".