31031350534243 has 2 divisors, whose sum is σ = 31031350534244. Its totient is φ = 31031350534242.

The previous prime is 31031350534241. The next prime is 31031350534313. The reversal of 31031350534243 is 34243505313013.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31031350534243 - 2¹ = 31031350534241 is a prime.

Together with 31031350534241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31031350534241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15515675267121 + 15515675267122.

It is an arithmetic number, because the mean of its divisors is an integer number (15515675267122).

Almost surely, 2^{31031350534243} is an apocalyptic number.

31031350534243 is a deficient number, since it is larger than the sum of its proper divisors (1).

31031350534243 is an equidigital number, since it uses as much as digits as its factorization.

31031350534243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 37.

Adding to 31031350534243 its reverse (34243505313013), we get a palindrome (65274855847256).

The spelling of 31031350534243 in words is "thirty-one trillion, thirty-one billion, three hundred fifty million, five hundred thirty-four thousand, two hundred forty-three".