1312318127 has 2 divisors, whose sum is σ = 1312318128. Its totient is φ = 1312318126.

The previous prime is 1312318069. The next prime is 1312318129. The reversal of 1312318127 is 7218132131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312318127 is a prime.

Together with 1312318129, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312318127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312318129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656159063 + 656159064.

It is an arithmetic number, because the mean of its divisors is an integer number (656159064).

Almost surely, 2^1312318127 is an apocalyptic number.

1312318127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312318127 is an equidigital number, since it uses as much as digits as its factorization.

1312318127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 29.

The square root of 1312318127 is about 36225.9316926425. The cubic root of 1312318127 is about 1094.8292101733.

The spelling of 1312318127 in words is "one billion, three hundred twelve million, three hundred eighteen thousand, one hundred twenty-seven".