1312123327 has 2 divisors, whose sum is σ = 1312123328. Its totient is φ = 1312123326.

The previous prime is 1312123301. The next prime is 1312123363. The reversal of 1312123327 is 7233212131.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (7233212131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312123327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312123727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656061663 + 656061664.

It is an arithmetic number, because the mean of its divisors is an integer number (656061664).

Almost surely, 2^1312123327 is an apocalyptic number.

1312123327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312123327 is an equidigital number, since it uses as much as digits as its factorization.

1312123327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 25.

The square root of 1312123327 is about 36223.2429111475. The cubic root of 1312123327 is about 1094.7750354832.

Adding to 1312123327 its reverse (7233212131), we get a palindrome (8545335458).

The spelling of 1312123327 in words is "one billion, three hundred twelve million, one hundred twenty-three thousand, three hundred twenty-seven".