1031278146289 has 2 divisors, whose sum is σ = 1031278146290. Its totient is φ = 1031278146288.

The previous prime is 1031278146271. The next prime is 1031278146359. The reversal of 1031278146289 is 9826418721301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 745899959025 + 285378187264 = 863655^2 + 534208^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031278146289 - 2⁵ = 1031278146257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031278146089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515639073144 + 515639073145.

It is an arithmetic number, because the mean of its divisors is an integer number (515639073145).

Almost surely, 2^{1031278146289} is an apocalyptic number.

It is an amenable number.

1031278146289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031278146289 is an equidigital number, since it uses as much as digits as its factorization.

1031278146289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 1031278146289 in words is "one trillion, thirty-one billion, two hundred seventy-eight million, one hundred forty-six thousand, two hundred eighty-nine".