131212242431240 has 32 divisors (see below), whose sum is σ = 295228127825280. Its totient is φ = 52484793442752.

The previous prime is 131212242431147. The next prime is 131212242431327. The reversal of 131212242431240 is 42134242212131.

It is a super-3 number, since 3×131212242431240³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 131212242431197 and 131212242431206.

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, 19220609 + ... + 25136751.

It is an arithmetic number, because the mean of its divisors is an integer number (9225878994540).

Almost surely, 2^{131212242431240} is an apocalyptic number.

131212242431240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131212242431240 is an abundant number, since it is smaller than the sum of its proper divisors (164015885394040).

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

131212242431240 is a wasteful number, since it uses less digits than its factorization.

131212242431240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6470621 (or 6470617 counting only the distinct ones).

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

Adding to 131212242431240 its reverse (42134242212131), we get a palindrome (173346484643371).

The spelling of 131212242431240 in words is "one hundred thirty-one trillion, two hundred twelve billion, two hundred forty-two million, four hundred thirty-one thousand, two hundred forty".