31431142140043 has 2 divisors, whose sum is σ = 31431142140044. Its totient is φ = 31431142140042.

The previous prime is 31431142140019. The next prime is 31431142140059. The reversal of 31431142140043 is 34004124113413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31431142140043 - 2⁵ = 31431142140011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31431142139987 and 31431142140014.

It is not a weakly prime, because it can be changed into another prime (31431142140743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15715571070021 + 15715571070022.

It is an arithmetic number, because the mean of its divisors is an integer number (15715571070022).

Almost surely, 2^{31431142140043} is an apocalyptic number.

31431142140043 is a deficient number, since it is larger than the sum of its proper divisors (1).

31431142140043 is an equidigital number, since it uses as much as digits as its factorization.

31431142140043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 31431142140043 its reverse (34004124113413), we get a palindrome (65435266253456).

The spelling of 31431142140043 in words is "thirty-one trillion, four hundred thirty-one billion, one hundred forty-two million, one hundred forty thousand, forty-three".