131443130440 has 32 divisors (see below), whose sum is σ = 296215796160. Its totient is φ = 52493918400.

The previous prime is 131443130419. The next prime is 131443130459. The reversal of 131443130440 is 44031344131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131443130399 and 131443130408.

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, 2578626 + ... + 2629105.

It is an arithmetic number, because the mean of its divisors is an integer number (9256743630).

Almost surely, 2^131443130440 is an apocalyptic number.

131443130440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131443130440 is an abundant number, since it is smaller than the sum of its proper divisors (164772665720).

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

131443130440 is a wasteful number, since it uses less digits than its factorization.

131443130440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208373 (or 5208369 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 131443130440 its reverse (44031344131), we get a palindrome (175474474571).

The spelling of 131443130440 in words is "one hundred thirty-one billion, four hundred forty-three million, one hundred thirty thousand, four hundred forty".