4031312051440 has 40 divisors (see below), whose sum is σ = 9675148929408. Its totient is φ = 1560507889920.

The previous prime is 4031312051401. The next prime is 4031312051447. The reversal of 4031312051440 is 441502131304.

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

It is a junction number, because it is equal to n+sod(n) for n = 4031312051399 and 4031312051408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4031312051447) 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, 812762047 + ... + 812767006.

Almost surely, 2^{4031312051440} is an apocalyptic number.

4031312051440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4031312051440 is an abundant number, since it is smaller than the sum of its proper divisors (5643836877968).

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

4031312051440 is a wasteful number, since it uses less digits than its factorization.

4031312051440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625529097 (or 1625529091 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 4031312051440 its reverse (441502131304), we get a palindrome (4472814182744).

The spelling of 4031312051440 in words is "four trillion, thirty-one billion, three hundred twelve million, fifty-one thousand, four hundred forty".