31431122343424 has 80 divisors (see below), whose sum is σ = 64983382382160. Its totient is φ = 15177609216000.

The previous prime is 31431122343373. The next prime is 31431122343539. The reversal of 31431122343424 is 42434322113413.

It is a super-3 number, since 3×31431122343424³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6061077 + ... + 9979924.

It is an arithmetic number, because the mean of its divisors is an integer number (812292279777).

Almost surely, 2^{31431122343424} is an apocalyptic number.

It is an amenable number.

31431122343424 is an abundant number, since it is smaller than the sum of its proper divisors (33552260038736).

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

31431122343424 is an equidigital number, since it uses as much as digits as its factorization.

31431122343424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16041151 (or 16041135 counting only the distinct ones).

The product of its digits is 165888, while the sum is 37.

Adding to 31431122343424 its reverse (42434322113413), we get a palindrome (73865444456837).

The spelling of 31431122343424 in words is "thirty-one trillion, four hundred thirty-one billion, one hundred twenty-two million, three hundred forty-three thousand, four hundred twenty-four".