131212022331340 has 96 divisors (see below), whose sum is σ = 285074695080000. Its totient is φ = 50690594525184.

The previous prime is 131212022331337. The next prime is 131212022331347. The reversal of 131212022331340 is 43133220212131.

It is a junction number, because it is equal to n+sod(n) for n = 131212022331299 and 131212022331308.

It is not an unprimeable number, because it can be changed into a prime (131212022331347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2661098967 + ... + 2661148273.

It is an arithmetic number, because the mean of its divisors is an integer number (2969528073750).

Almost surely, 2^{131212022331340} is an apocalyptic number.

131212022331340 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 131212022331340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142537347540000).

131212022331340 is an abundant number, since it is smaller than the sum of its proper divisors (153862672748660).

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

131212022331340 is a wasteful number, since it uses less digits than its factorization.

131212022331340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75739 (or 75737 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 131212022331340 its reverse (43133220212131), we get a palindrome (174345242543471).

The spelling of 131212022331340 in words is "one hundred thirty-one trillion, two hundred twelve billion, twenty-two million, three hundred thirty-one thousand, three hundred forty".