131224131420440 has 32 divisors (see below), whose sum is σ = 308091438989280. Its totient is φ = 50207493760512.

The previous prime is 131224131420427. The next prime is 131224131420457. The reversal of 131224131420440 is 44024131422131.

It is a junction number, because it is equal to n+sod(n) for n = 131224131420397 and 131224131420406.

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, 71317461809 + ... + 71317463648.

It is an arithmetic number, because the mean of its divisors is an integer number (9627857468415).

Almost surely, 2^{131224131420440} is an apocalyptic number.

131224131420440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131224131420440 is an abundant number, since it is smaller than the sum of its proper divisors (176867307568840).

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

131224131420440 is a wasteful number, since it uses less digits than its factorization.

131224131420440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142634925491 (or 142634925487 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 131224131420440 its reverse (44024131422131), we get a palindrome (175248262842571).

The spelling of 131224131420440 in words is "one hundred thirty-one trillion, two hundred twenty-four billion, one hundred thirty-one million, four hundred twenty thousand, four hundred forty".