1311774472 has 8 divisors (see below), whose sum is σ = 2459577150. Its totient is φ = 655887232.

The previous prime is 1311774463. The next prime is 1311774473. The reversal of 1311774472 is 2744771131.

It can be written as a sum of positive squares in only one way, i.e., 950242276 + 361532196 = 30826^2 + 19014^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1311774473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81985897 + ... + 81985912.

Almost surely, 2^1311774472 is an apocalyptic number.

It is an amenable number.

1311774472 is a deficient number, since it is larger than the sum of its proper divisors (1147802678).

1311774472 is a wasteful number, since it uses less digits than its factorization.

1311774472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163971815 (or 163971811 counting only the distinct ones).

The product of its digits is 32928, while the sum is 37.

The square root of 1311774472 is about 36218.4272436007. The cubic root of 1311774472 is about 1094.6780040561.

The spelling of 1311774472 in words is "one billion, three hundred eleven million, seven hundred seventy-four thousand, four hundred seventy-two".