1310199997 has 2 divisors, whose sum is σ = 1310199998. Its totient is φ = 1310199996.

The previous prime is 1310199973. The next prime is 1310200033. The reversal of 1310199997 is 7999910131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1305087876 + 5112121 = 36126^2 + 2261^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310199997 - 2¹¹ = 1310197949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1310199997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310199797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655099998 + 655099999.

It is an arithmetic number, because the mean of its divisors is an integer number (655099999).

Almost surely, 2^1310199997 is an apocalyptic number.

It is an amenable number.

1310199997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310199997 is an equidigital number, since it uses as much as digits as its factorization.

1310199997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 137781, while the sum is 49.

The square root of 1310199997 is about 36196.6848896415. The cubic root of 1310199997 is about 1094.2398613682.

The spelling of 1310199997 in words is "one billion, three hundred ten million, one hundred ninety-nine thousand, nine hundred ninety-seven".