1312471263 has 8 divisors (see below), whose sum is σ = 1750750848. Its totient is φ = 874586264.

The previous prime is 1312471249. The next prime is 1312471291. The reversal of 1312471263 is 3621742131.

It is a happy number.

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 1312471263 - 2⁸ = 1312471007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312471263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312471463) 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 7 ways as a sum of consecutive naturals, for example, 90795 + ... + 104252.

It is an arithmetic number, because the mean of its divisors is an integer number (218843856).

Almost surely, 2^1312471263 is an apocalyptic number.

1312471263 is a deficient number, since it is larger than the sum of its proper divisors (438279585).

1312471263 is a wasteful number, since it uses less digits than its factorization.

1312471263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197293.

The product of its digits is 6048, while the sum is 30.

The square root of 1312471263 is about 36228.0452550231. The cubic root of 1312471263 is about 1094.8717941682.

The spelling of 1312471263 in words is "one billion, three hundred twelve million, four hundred seventy-one thousand, two hundred sixty-three".