131212443313140 has 384 divisors, whose sum is σ = 445352182345728. Its totient is φ = 28178137128960.

The previous prime is 131212443313117. The next prime is 131212443313153. The reversal of 131212443313140 is 41313344212131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 15540969759 + ... + 15540978201.

It is an arithmetic number, because the mean of its divisors is an integer number (1159771308192).

Almost surely, 2^{131212443313140} is an apocalyptic number.

131212443313140 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 131212443313140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222676091172864).

131212443313140 is an abundant number, since it is smaller than the sum of its proper divisors (314139739032588).

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

131212443313140 is a wasteful number, since it uses less digits than its factorization.

131212443313140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12007 (or 12005 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 131212443313140 its reverse (41313344212131), we get a palindrome (172525787525271).

The spelling of 131212443313140 in words is "one hundred thirty-one trillion, two hundred twelve billion, four hundred forty-three million, three hundred thirteen thousand, one hundred forty".