1031312131144 has 8 divisors (see below), whose sum is σ = 1933710245910. Its totient is φ = 515656065568.

The previous prime is 1031312131061. The next prime is 1031312131247. The reversal of 1031312131144 is 4411312131301.

It can be written as a sum of positive squares in only one way, i.e., 584903744100 + 446408387044 = 764790^2 + 668138^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64457008189 + ... + 64457008204.

Almost surely, 2^{1031312131144} is an apocalyptic number.

It is an amenable number.

1031312131144 is a deficient number, since it is larger than the sum of its proper divisors (902398114766).

1031312131144 is a wasteful number, since it uses less digits than its factorization.

1031312131144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128914016399 (or 128914016395 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 1031312131144 its reverse (4411312131301), we get a palindrome (5442624262445).

The spelling of 1031312131144 in words is "one trillion, thirty-one billion, three hundred twelve million, one hundred thirty-one thousand, one hundred forty-four".