131343230400440 has 128 divisors (see below), whose sum is σ = 307600253352000. Its totient is φ = 50412695789568.

The previous prime is 131343230400299. The next prime is 131343230400461. The reversal of 131343230400440 is 44004032343131.

It is a junction number, because it is equal to n+sod(n) for n = 131343230400397 and 131343230400406.

It is a congruent number.

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, 517426832 + ... + 517680608.

Almost surely, 2^{131343230400440} is an apocalyptic number.

131343230400440 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 131343230400440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153800126676000).

131343230400440 is an abundant number, since it is smaller than the sum of its proper divisors (176257022951560).

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

131343230400440 is a wasteful number, since it uses less digits than its factorization.

131343230400440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256569 (or 256565 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 131343230400440 its reverse (44004032343131), we get a palindrome (175347262743571).

The spelling of 131343230400440 in words is "one hundred thirty-one trillion, three hundred forty-three billion, two hundred thirty million, four hundred thousand, four hundred forty".