31440343124142 has 32 divisors (see below), whose sum is σ = 69870973248000. Its totient is φ = 10479582762264.

The previous prime is 31440343124137. The next prime is 31440343124173. The reversal of 31440343124142 is 24142134304413.

31440343124142 is a `hidden beast` number, since 3 + 1 + 4 + 403 + 4 + 3 + 1 + 241 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 31440343124097 and 31440343124106.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13691892 + ... + 15822407.

It is an arithmetic number, because the mean of its divisors is an integer number (2183467914000).

Almost surely, 2^{31440343124142} is an apocalyptic number.

31440343124142 is an abundant number, since it is smaller than the sum of its proper divisors (38430630123858).

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

31440343124142 is a wasteful number, since it uses less digits than its factorization.

31440343124142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29534037 (or 29534031 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 31440343124142 its reverse (24142134304413), we get a palindrome (55582477428555).

The spelling of 31440343124142 in words is "thirty-one trillion, four hundred forty billion, three hundred forty-three million, one hundred twenty-four thousand, one hundred forty-two".