1031863668929 has 2 divisors, whose sum is σ = 1031863668930. Its totient is φ = 1031863668928.

The previous prime is 1031863668877. The next prime is 1031863668931. The reversal of 1031863668929 is 9298663681301.

1031863668929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1028733490225 + 3130178704 = 1014265^2 + 55948^2 .

It is an emirp because it is prime and its reverse (9298663681301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031863668929 is a prime.

Together with 1031863668931, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1031863668959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515931834464 + 515931834465.

It is an arithmetic number, because the mean of its divisors is an integer number (515931834465).

Almost surely, 2^{1031863668929} is an apocalyptic number.

It is an amenable number.

1031863668929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031863668929 is an equidigital number, since it uses as much as digits as its factorization.

1031863668929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20155392, while the sum is 62.

The spelling of 1031863668929 in words is "one trillion, thirty-one billion, eight hundred sixty-three million, six hundred sixty-eight thousand, nine hundred twenty-nine".