1312217267 has 8 divisors (see below), whose sum is σ = 1408440816. Its totient is φ = 1218108672.

The previous prime is 1312217251. The next prime is 1312217279. The reversal of 1312217267 is 7627122131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312217267 - 2⁴ = 1312217251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312217287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527453 + ... + 529934.

It is an arithmetic number, because the mean of its divisors is an integer number (176055102).

Almost surely, 2^1312217267 is an apocalyptic number.

1312217267 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1312217267 is a deficient number, since it is larger than the sum of its proper divisors (96223549).

1312217267 is a wasteful number, since it uses less digits than its factorization.

1312217267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057477.

The product of its digits is 7056, while the sum is 32.

The square root of 1312217267 is about 36224.5395691926. The cubic root of 1312217267 is about 1094.8011612572.

Adding to 1312217267 its reverse (7627122131), we get a palindrome (8939339398).

The spelling of 1312217267 in words is "one billion, three hundred twelve million, two hundred seventeen thousand, two hundred sixty-seven".