131231333312240 has 240 divisors, whose sum is σ = 363768938976384. Its totient is φ = 43879559270400.

The previous prime is 131231333312201. The next prime is 131231333312269. The reversal of 131231333312240 is 42213333132131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131231333312197 and 131231333312206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50504030 + ... + 53038850.

Almost surely, 2^{131231333312240} is an apocalyptic number.

131231333312240 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 131231333312240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181884469488192).

131231333312240 is an abundant number, since it is smaller than the sum of its proper divisors (232537605664144).

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

131231333312240 is a wasteful number, since it uses less digits than its factorization.

131231333312240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2535176 (or 2535163 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 32.

Adding to 131231333312240 its reverse (42213333132131), we get a palindrome (173444666444371).

The spelling of 131231333312240 in words is "one hundred thirty-one trillion, two hundred thirty-one billion, three hundred thirty-three million, three hundred twelve thousand, two hundred forty".