1311331304 has 8 divisors (see below), whose sum is σ = 2458746210. Its totient is φ = 655665648.

The previous prime is 1311331297. The next prime is 1311331321. The reversal of 1311331304 is 4031331131.

It can be written as a sum of positive squares in only one way, i.e., 1075708804 + 235622500 = 32798^2 + 15350^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81958199 + ... + 81958214.

Almost surely, 2^1311331304 is an apocalyptic number.

It is an amenable number.

1311331304 is a deficient number, since it is larger than the sum of its proper divisors (1147414906).

1311331304 is a wasteful number, since it uses less digits than its factorization.

1311331304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163916419 (or 163916415 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1311331304 is about 36212.3087361190. The cubic root of 1311331304 is about 1094.5547153573.

Adding to 1311331304 its reverse (4031331131), we get a palindrome (5342662435).

The spelling of 1311331304 in words is "one billion, three hundred eleven million, three hundred thirty-one thousand, three hundred four".