1312623667 has 2 divisors, whose sum is σ = 1312623668. Its totient is φ = 1312623666.

The previous prime is 1312623659. The next prime is 1312623679. The reversal of 1312623667 is 7663262131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312623667 - 2³ = 1312623659 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312623467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656311833 + 656311834.

It is an arithmetic number, because the mean of its divisors is an integer number (656311834).

Almost surely, 2^1312623667 is an apocalyptic number.

1312623667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312623667 is an equidigital number, since it uses as much as digits as its factorization.

1312623667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 1312623667 is about 36230.1485920221. The cubic root of 1312623667 is about 1094.9141713202.

Adding to 1312623667 its reverse (7663262131), we get a palindrome (8975885798).

The spelling of 1312623667 in words is "one billion, three hundred twelve million, six hundred twenty-three thousand, six hundred sixty-seven".