1273312505 has 8 divisors (see below), whose sum is σ = 1531277952. Its totient is φ = 1016448048.

The previous prime is 1273312489. The next prime is 1273312511. The reversal of 1273312505 is 5052133721.

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 1273312505 - 2⁴ = 1273312489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272699 + ... + 277328.

It is an arithmetic number, because the mean of its divisors is an integer number (191409744).

Almost surely, 2^1273312505 is an apocalyptic number.

It is an amenable number.

1273312505 is a deficient number, since it is larger than the sum of its proper divisors (257965447).

1273312505 is an equidigital number, since it uses as much as digits as its factorization.

1273312505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550495.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 1273312505 is about 35683.5046625188. The cubic root of 1273312505 is about 1083.8728424916.

The spelling of 1273312505 in words is "one billion, two hundred seventy-three million, three hundred twelve thousand, five hundred five".