1368310997 has 2 divisors, whose sum is σ = 1368310998. Its totient is φ = 1368310996.

The previous prime is 1368310987. The next prime is 1368311039. The reversal of 1368310997 is 7990138631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1367076676 + 1234321 = 36974^2 + 1111^2 .

It is an emirp because it is prime and its reverse (7990138631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1368310997 - 2⁴ = 1368310981 is a prime.

It is a super-2 number, since 2×1368310997² = 3744549969022268018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1368310987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684155498 + 684155499.

It is an arithmetic number, because the mean of its divisors is an integer number (684155499).

Almost surely, 2^1368310997 is an apocalyptic number.

It is an amenable number.

1368310997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368310997 is an equidigital number, since it uses as much as digits as its factorization.

1368310997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 1368310997 is about 36990.6879768409. The cubic root of 1368310997 is about 1110.1839364584.

The spelling of 1368310997 in words is "one billion, three hundred sixty-eight million, three hundred ten thousand, nine hundred ninety-seven".