131213004421240 has 96 divisors (see below), whose sum is σ = 343432692432720. Its totient is φ = 44986957274112.

The previous prime is 131213004421229. The next prime is 131213004421253. The reversal of 131213004421240 is 42124400312131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 131213004421199 and 131213004421208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 395415072 + ... + 395746768.

Almost surely, 2^{131213004421240} is an apocalyptic number.

131213004421240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131213004421240 is an abundant number, since it is smaller than the sum of its proper divisors (212219688011480).

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

131213004421240 is a wasteful number, since it uses less digits than its factorization.

131213004421240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533549 (or 533538 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 131213004421240 its reverse (42124400312131), we get a palindrome (173337404733371).

The spelling of 131213004421240 in words is "one hundred thirty-one trillion, two hundred thirteen billion, four million, four hundred twenty-one thousand, two hundred forty".