1271948313 has 16 divisors (see below), whose sum is σ = 1796665536. Its totient is φ = 797652480.

The previous prime is 1271948291. The next prime is 1271948317. The reversal of 1271948313 is 3138491721.

It is not a de Polignac number, because 1271948313 - 2⁸ = 1271948057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1271948317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106693 + ... + 118013.

It is an arithmetic number, because the mean of its divisors is an integer number (112291596).

Almost surely, 2^1271948313 is an apocalyptic number.

It is an amenable number.

1271948313 is a deficient number, since it is larger than the sum of its proper divisors (524717223).

1271948313 is a wasteful number, since it uses less digits than its factorization.

1271948313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13544.

The product of its digits is 36288, while the sum is 39.

The square root of 1271948313 is about 35664.3843771346. The cubic root of 1271948313 is about 1083.4856269895.

The spelling of 1271948313 in words is "one billion, two hundred seventy-one million, nine hundred forty-eight thousand, three hundred thirteen".