1311275372 has 24 divisors (see below), whose sum is σ = 2556610560. Its totient is φ = 583351760.

The previous prime is 1311275369. The next prime is 1311275429. The reversal of 1311275372 is 2735721131.

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, 314972 + ... + 319107.

It is an arithmetic number, because the mean of its divisors is an integer number (106525440).

Almost surely, 2^1311275372 is an apocalyptic number.

It is an amenable number.

1311275372 is a deficient number, since it is larger than the sum of its proper divisors (1245335188).

1311275372 is a wasteful number, since it uses less digits than its factorization.

1311275372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634141 (or 634139 counting only the distinct ones).

The product of its digits is 8820, while the sum is 32.

The square root of 1311275372 is about 36211.5364490379. The cubic root of 1311275372 is about 1094.5391531815.

The spelling of 1311275372 in words is "one billion, three hundred eleven million, two hundred seventy-five thousand, three hundred seventy-two".