1271314436 has 48 divisors (see below), whose sum is σ = 2606951424. Its totient is φ = 531117216.

The previous prime is 1271314423. The next prime is 1271314507. The reversal of 1271314436 is 6344131721.

It is an unprimeable number.

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, 990251 + ... + 991533.

It is an arithmetic number, because the mean of its divisors is an integer number (54311488).

Almost surely, 2^1271314436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1271314436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1303475712).

1271314436 is an abundant number, since it is smaller than the sum of its proper divisors (1335636988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1271314436 is a wasteful number, since it uses less digits than its factorization.

1271314436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160 (or 2158 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 1271314436 is about 35655.4965748621. The cubic root of 1271314436 is about 1083.3056116194.

The spelling of 1271314436 in words is "one billion, two hundred seventy-one million, three hundred fourteen thousand, four hundred thirty-six".