131201404343240 has 128 divisors (see below), whose sum is σ = 368052287512320. Its totient is φ = 40893189811200.

The previous prime is 131201404343239. The next prime is 131201404343263. The reversal of 131201404343240 is 42343404102131.

It is a junction number, because it is equal to n+sod(n) for n = 131201404343197 and 131201404343206.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180041210 + ... + 180768470.

It is an arithmetic number, because the mean of its divisors is an integer number (2875408496190).

Almost surely, 2^{131201404343240} is an apocalyptic number.

131201404343240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131201404343240 is an abundant number, since it is smaller than the sum of its proper divisors (236850883169080).

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

131201404343240 is a wasteful number, since it uses less digits than its factorization.

131201404343240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785863 (or 785859 counting only the distinct ones).

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

Adding to 131201404343240 its reverse (42343404102131), we get a palindrome (173544808445371).

The spelling of 131201404343240 in words is "one hundred thirty-one trillion, two hundred one billion, four hundred four million, three hundred forty-three thousand, two hundred forty".