1310355243991 has 2 divisors, whose sum is σ = 1310355243992. Its totient is φ = 1310355243990.

The previous prime is 1310355243947. The next prime is 1310355244043. The reversal of 1310355243991 is 1993425530131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1310355243991 - 2¹³ = 1310355235799 is a prime.

It is a super-3 number, since 3×1310355243991³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310355247991) 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, 655177621995 + 655177621996.

It is an arithmetic number, because the mean of its divisors is an integer number (655177621996).

Almost surely, 2^{1310355243991} is an apocalyptic number.

1310355243991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310355243991 is an equidigital number, since it uses as much as digits as its factorization.

1310355243991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 437400, while the sum is 46.

The spelling of 1310355243991 in words is "one trillion, three hundred ten billion, three hundred fifty-five million, two hundred forty-three thousand, nine hundred ninety-one".