1311341272 has 32 divisors (see below), whose sum is σ = 2528255520. Its totient is φ = 637182720.

The previous prime is 1311341243. The next prime is 1311341293. The reversal of 1311341272 is 2721431131.

It is a congruent 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, 303028 + ... + 307324.

It is an arithmetic number, because the mean of its divisors is an integer number (79007985).

Almost surely, 2^1311341272 is an apocalyptic number.

It is an amenable number.

1311341272 is a deficient number, since it is larger than the sum of its proper divisors (1216914248).

1311341272 is a wasteful number, since it uses less digits than its factorization.

1311341272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5371 (or 5367 counting only the distinct ones).

The product of its digits is 1008, while the sum is 25.

The square root of 1311341272 is about 36212.4463686175. The cubic root of 1311341272 is about 1094.5574887458.

The spelling of 1311341272 in words is "one billion, three hundred eleven million, three hundred forty-one thousand, two hundred seventy-two".