1311332338 has 8 divisors (see below), whose sum is σ = 1971380700. Its totient is φ = 654205440.

The previous prime is 1311332317. The next prime is 1311332339. The reversal of 1311332338 is 8332331131.

It can be written as a sum of positive squares in 2 ways, for example, as 1309209489 + 2122849 = 36183^2 + 1457^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1311332339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729243 + ... + 731038.

Almost surely, 2^1311332338 is an apocalyptic number.

1311332338 is a deficient number, since it is larger than the sum of its proper divisors (660048362).

1311332338 is a wasteful number, since it uses less digits than its factorization.

1311332338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460732.

The product of its digits is 3888, while the sum is 28.

The square root of 1311332338 is about 36212.3230130297. The cubic root of 1311332338 is about 1094.5550030469. Note that the first 3 decimals are identical.

Adding to 1311332338 its reverse (8332331131), we get a palindrome (9643663469).

It can be divided in two parts, 13113 and 32338, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 1311332338 in words is "one billion, three hundred eleven million, three hundred thirty-two thousand, three hundred thirty-eight".