31120129253743 has 2 divisors, whose sum is σ = 31120129253744. Its totient is φ = 31120129253742.

The previous prime is 31120129253683. The next prime is 31120129253771. The reversal of 31120129253743 is 34735292102113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31120129253743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31120129253743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31120129253783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15560064626871 + 15560064626872.

It is an arithmetic number, because the mean of its divisors is an integer number (15560064626872).

Almost surely, 2^{31120129253743} is an apocalyptic number.

31120129253743 is a deficient number, since it is larger than the sum of its proper divisors (1).

31120129253743 is an equidigital number, since it uses as much as digits as its factorization.

31120129253743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 31120129253743 in words is "thirty-one trillion, one hundred twenty billion, one hundred twenty-nine million, two hundred fifty-three thousand, seven hundred forty-three".