31121412143 has 2 divisors, whose sum is σ = 31121412144. Its totient is φ = 31121412142.

The previous prime is 31121412109. The next prime is 31121412149. The reversal of 31121412143 is 34121412113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31121412143 - 2⁸ = 31121411887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31121412149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15560706071 + 15560706072.

It is an arithmetic number, because the mean of its divisors is an integer number (15560706072).

Almost surely, 2^31121412143 is an apocalyptic number.

31121412143 is a deficient number, since it is larger than the sum of its proper divisors (1).

31121412143 is an equidigital number, since it uses as much as digits as its factorization.

31121412143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 23.

Adding to 31121412143 its reverse (34121412113), we get a palindrome (65242824256).

The spelling of 31121412143 in words is "thirty-one billion, one hundred twenty-one million, four hundred twelve thousand, one hundred forty-three".