1310430421991 has 2 divisors, whose sum is σ = 1310430421992. Its totient is φ = 1310430421990.

The previous prime is 1310430421967. The next prime is 1310430422083. The reversal of 1310430421991 is 1991240340131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310430421991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310430421931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655215210995 + 655215210996.

It is an arithmetic number, because the mean of its divisors is an integer number (655215210996).

Almost surely, 2^{1310430421991} is an apocalyptic number.

1310430421991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310430421991 is an equidigital number, since it uses as much as digits as its factorization.

1310430421991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 1310430421991 in words is "one trillion, three hundred ten billion, four hundred thirty million, four hundred twenty-one thousand, nine hundred ninety-one".