31011113333243 has 2 divisors, whose sum is σ = 31011113333244. Its totient is φ = 31011113333242.

The previous prime is 31011113333197. The next prime is 31011113333261. The reversal of 31011113333243 is 34233331111013.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31011113333243 - 2²⁰ = 31011112284667 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31011113333143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15505556666621 + 15505556666622.

It is an arithmetic number, because the mean of its divisors is an integer number (15505556666622).

Almost surely, 2^{31011113333243} is an apocalyptic number.

31011113333243 is a deficient number, since it is larger than the sum of its proper divisors (1).

31011113333243 is an equidigital number, since it uses as much as digits as its factorization.

31011113333243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 31011113333243 its reverse (34233331111013), we get a palindrome (65244444444256).

The spelling of 31011113333243 in words is "thirty-one trillion, eleven billion, one hundred thirteen million, three hundred thirty-three thousand, two hundred forty-three".