31431342043424 has 24 divisors (see below), whose sum is σ = 61887653102268. Its totient is φ = 15713842842880.

The previous prime is 31431342043417. The next prime is 31431342043483. The reversal of 31431342043424 is 42434024313413.

It can be written as a sum of positive squares in 2 ways, for example, as 31251454090000 + 179887953424 = 5590300^2 + 424132^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56851187 + ... + 57401394.

Almost surely, 2^{31431342043424} is an apocalyptic number.

It is an amenable number.

31431342043424 is a deficient number, since it is larger than the sum of its proper divisors (30456311058844).

31431342043424 is a wasteful number, since it uses less digits than its factorization.

31431342043424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114261188 (or 114261180 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 38.

Adding to 31431342043424 its reverse (42434024313413), we get a palindrome (73865366356837).

The spelling of 31431342043424 in words is "thirty-one trillion, four hundred thirty-one billion, three hundred forty-two million, forty-three thousand, four hundred twenty-four".