1312666273 has 8 divisors (see below), whose sum is σ = 1317344256. Its totient is φ = 1307997600.

The previous prime is 1312666253. The next prime is 1312666297. The reversal of 1312666273 is 3726662131.

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 1312666273 - 2²¹ = 1310569121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312666253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385408 + ... + 388798.

It is an arithmetic number, because the mean of its divisors is an integer number (164668032).

Almost surely, 2^1312666273 is an apocalyptic number.

It is an amenable number.

1312666273 is a deficient number, since it is larger than the sum of its proper divisors (4677983).

1312666273 is an equidigital number, since it uses as much as digits as its factorization.

1312666273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4655.

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

The square root of 1312666273 is about 36230.7365782149. The cubic root of 1312666273 is about 1094.9260176728.

The spelling of 1312666273 in words is "one billion, three hundred twelve million, six hundred sixty-six thousand, two hundred seventy-three".