31200423143 has 2 divisors, whose sum is σ = 31200423144. Its totient is φ = 31200423142.

The previous prime is 31200423113. The next prime is 31200423193. The reversal of 31200423143 is 34132400213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31200423143 - 2¹⁰ = 31200422119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31200423113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15600211571 + 15600211572.

It is an arithmetic number, because the mean of its divisors is an integer number (15600211572).

Almost surely, 2^31200423143 is an apocalyptic number.

31200423143 is a deficient number, since it is larger than the sum of its proper divisors (1).

31200423143 is an equidigital number, since it uses as much as digits as its factorization.

31200423143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31200423143 its reverse (34132400213), we get a palindrome (65332823356).

The spelling of 31200423143 in words is "thirty-one billion, two hundred million, four hundred twenty-three thousand, one hundred forty-three".