1271323753 has 16 divisors (see below), whose sum is σ = 1478655360. Its totient is φ = 1070467200.

The previous prime is 1271323751. The next prime is 1271323759. The reversal of 1271323753 is 3573231721.

It is a cyclic number.

It is not a de Polignac number, because 1271323753 - 2¹ = 1271323751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1271323751) 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 15 ways as a sum of consecutive naturals, for example, 464493 + ... + 467221.

It is an arithmetic number, because the mean of its divisors is an integer number (92415960).

Almost surely, 2^1271323753 is an apocalyptic number.

It is an amenable number.

1271323753 is a deficient number, since it is larger than the sum of its proper divisors (207331607).

1271323753 is a wasteful number, since it uses less digits than its factorization.

1271323753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888.

The product of its digits is 26460, while the sum is 34.

The square root of 1271323753 is about 35655.6272276902. The cubic root of 1271323753 is about 1083.3082579969.

The spelling of 1271323753 in words is "one billion, two hundred seventy-one million, three hundred twenty-three thousand, seven hundred fifty-three".