2131031444444 has 24 divisors (see below), whose sum is σ = 4287584232960. Its totient is φ = 907830331056.

The previous prime is 2131031444441. The next prime is 2131031444447. The reversal of 2131031444444 is 4444441301312.

It is an interprime number because it is at equal distance from previous prime (2131031444441) and next prime (2131031444447).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131031444441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227864384 + ... + 227873735.

It is an arithmetic number, because the mean of its divisors is an integer number (178649343040).

Almost surely, 2^{2131031444444} is an apocalyptic number.

It is an amenable number.

2131031444444 is an abundant number, since it is smaller than the sum of its proper divisors (2156552788516).

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

2131031444444 is a wasteful number, since it uses less digits than its factorization.

2131031444444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455738297 (or 455738295 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 2131031444444 its reverse (4444441301312), we get a palindrome (6575472745756).

The spelling of 2131031444444 in words is "two trillion, one hundred thirty-one billion, thirty-one million, four hundred forty-four thousand, four hundred forty-four".