1312301143 has 2 divisors, whose sum is σ = 1312301144. Its totient is φ = 1312301142.

The previous prime is 1312301141. The next prime is 1312301149. The reversal of 1312301143 is 3411032131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312301143 - 2¹ = 1312301141 is a prime.

Together with 1312301141, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1312301143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312301141) 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, 656150571 + 656150572.

It is an arithmetic number, because the mean of its divisors is an integer number (656150572).

Almost surely, 2^1312301143 is an apocalyptic number.

1312301143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312301143 is an equidigital number, since it uses as much as digits as its factorization.

1312301143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1312301143 is about 36225.6972741727. The cubic root of 1312301143 is about 1094.8244870656.

Adding to 1312301143 its reverse (3411032131), we get a palindrome (4723333274).

The spelling of 1312301143 in words is "one billion, three hundred twelve million, three hundred one thousand, one hundred forty-three".