131224134040 has 64 divisors (see below), whose sum is σ = 300552975360. Its totient is φ = 51553299840.

The previous prime is 131224134017. The next prime is 131224134047. The reversal of 131224134040 is 40431422131.

It is a junction number, because it is equal to n+sod(n) for n = 131224133996 and 131224134014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131224134047) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 659077 + ... + 834763.

It is an arithmetic number, because the mean of its divisors is an integer number (4696140240).

Almost surely, 2^131224134040 is an apocalyptic number.

131224134040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131224134040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150276487680).

131224134040 is an abundant number, since it is smaller than the sum of its proper divisors (169328841320).

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

131224134040 is a wasteful number, since it uses less digits than its factorization.

131224134040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176032 (or 176028 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 131224134040 its reverse (40431422131), we get a palindrome (171655556171).

The spelling of 131224134040 in words is "one hundred thirty-one billion, two hundred twenty-four million, one hundred thirty-four thousand, forty".