1231050484813 has 2 divisors, whose sum is σ = 1231050484814. Its totient is φ = 1231050484812.

The previous prime is 1231050484777. The next prime is 1231050484819. The reversal of 1231050484813 is 3184840501321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 831711168324 + 399339316489 = 911982^2 + 631933^2 .

It is an emirp because it is prime and its reverse (3184840501321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1231050484813 - 2²¹ = 1231048387661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231050484819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615525242406 + 615525242407.

It is an arithmetic number, because the mean of its divisors is an integer number (615525242407).

Almost surely, 2^{1231050484813} is an apocalyptic number.

It is an amenable number.

1231050484813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231050484813 is an equidigital number, since it uses as much as digits as its factorization.

1231050484813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 1231050484813 in words is "one trillion, two hundred thirty-one billion, fifty million, four hundred eighty-four thousand, eight hundred thirteen".