1311132208 has 40 divisors (see below), whose sum is σ = 2699412048. Its totient is φ = 614787072.

The previous prime is 1311132203. The next prime is 1311132211. The reversal of 1311132208 is 8022311131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1311132203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68460 + ... + 85492.

Almost surely, 2^1311132208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311132208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1349706024).

1311132208 is an abundant number, since it is smaller than the sum of its proper divisors (1388279840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311132208 is a wasteful number, since it uses less digits than its factorization.

1311132208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17341 (or 17335 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1311132208 is about 36209.5596217353. The cubic root of 1311132208 is about 1094.4993180943.

Adding to 1311132208 its reverse (8022311131), we get a palindrome (9333443339).

The spelling of 1311132208 in words is "one billion, three hundred eleven million, one hundred thirty-two thousand, two hundred eight".