2102340131440 has 40 divisors (see below), whose sum is σ = 4888133858160. Its totient is φ = 840902839296.

The previous prime is 2102340131399. The next prime is 2102340131447. The reversal of 2102340131440 is 441310432012.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102340131447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1571547 + ... + 2583493.

It is an arithmetic number, because the mean of its divisors is an integer number (122203346454).

Almost surely, 2^{2102340131440} is an apocalyptic number.

2102340131440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102340131440 is an abundant number, since it is smaller than the sum of its proper divisors (2785793726720).

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

2102340131440 is a wasteful number, since it uses less digits than its factorization.

2102340131440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037929 (or 1037923 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 2102340131440 its reverse (441310432012), we get a palindrome (2543650563452).

The spelling of 2102340131440 in words is "two trillion, one hundred two billion, three hundred forty million, one hundred thirty-one thousand, four hundred forty".