131220331011240 has 32 divisors (see below), whose sum is σ = 393660993034080. Its totient is φ = 34992088269632.

The previous prime is 131220331011227. The next prime is 131220331011257. The reversal of 131220331011240 is 42110133022131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 131220331011240.

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, 546751379094 + ... + 546751379333.

It is an arithmetic number, because the mean of its divisors is an integer number (12301906032315).

Almost surely, 2^{131220331011240} is an apocalyptic number.

131220331011240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131220331011240 is an abundant number, since it is smaller than the sum of its proper divisors (262440662022840).

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

131220331011240 is a wasteful number, since it uses less digits than its factorization.

131220331011240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093502758441 (or 1093502758437 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 131220331011240 its reverse (42110133022131), we get a palindrome (173330464033371).

The spelling of 131220331011240 in words is "one hundred thirty-one trillion, two hundred twenty billion, three hundred thirty-one million, eleven thousand, two hundred forty".