1231385758793 has 2 divisors, whose sum is σ = 1231385758794. Its totient is φ = 1231385758792.

The previous prime is 1231385758747. The next prime is 1231385758853. The reversal of 1231385758793 is 3978575831321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 745119419209 + 486266339584 = 863203^2 + 697328^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231385758793 - 2²⁰ = 1231384710217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231385758703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615692879396 + 615692879397.

It is an arithmetic number, because the mean of its divisors is an integer number (615692879397).

Almost surely, 2^{1231385758793} is an apocalyptic number.

It is an amenable number.

1231385758793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231385758793 is an equidigital number, since it uses as much as digits as its factorization.

1231385758793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38102400, while the sum is 62.

The spelling of 1231385758793 in words is "one trillion, two hundred thirty-one billion, three hundred eighty-five million, seven hundred fifty-eight thousand, seven hundred ninety-three".