1311583828 has 6 divisors (see below), whose sum is σ = 2295271706. Its totient is φ = 655791912.

The previous prime is 1311583817. The next prime is 1311583829. The reversal of 1311583828 is 8283851131.

It can be written as a sum of positive squares in only one way, i.e., 886729284 + 424854544 = 29778^2 + 20612^2 .

It is a super-2 number, since 2×1311583828² = 3440504275742267168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311583829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163947975 + ... + 163947982.

Almost surely, 2^1311583828 is an apocalyptic number.

It is an amenable number.

1311583828 is a deficient number, since it is larger than the sum of its proper divisors (983687878).

1311583828 is a wasteful number, since it uses less digits than its factorization.

1311583828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327895961 (or 327895959 counting only the distinct ones).

The product of its digits is 46080, while the sum is 40.

The square root of 1311583828 is about 36215.7952832738. The cubic root of 1311583828 is about 1094.6249705739.

The spelling of 1311583828 in words is "one billion, three hundred eleven million, five hundred eighty-three thousand, eight hundred twenty-eight".