1312275005 has 16 divisors (see below), whose sum is σ = 1670143104. Its totient is φ = 987708480.

The previous prime is 1312275001. The next prime is 1312275011. The reversal of 1312275005 is 5005722131.

It is not a de Polignac number, because 1312275005 - 2² = 1312275001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312275001) 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 in 15 ways as a sum of consecutive naturals, for example, 86519 + ... + 100548.

It is an arithmetic number, because the mean of its divisors is an integer number (104383944).

Almost surely, 2^1312275005 is an apocalyptic number.

It is an amenable number.

1312275005 is a deficient number, since it is larger than the sum of its proper divisors (357868099).

1312275005 is a wasteful number, since it uses less digits than its factorization.

1312275005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187156.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 1312275005 is about 36225.3365063735. The cubic root of 1312275005 is about 1094.8172182279.

Adding to 1312275005 its reverse (5005722131), we get a palindrome (6317997136).

The spelling of 1312275005 in words is "one billion, three hundred twelve million, two hundred seventy-five thousand, five".