1311208 has 8 divisors (see below), whose sum is σ = 2458530. Its totient is φ = 655600.

The previous prime is 1311181. The next prime is 1311217. The reversal of 1311208 is 8021131.

1311208 is nontrivially palindromic in base 5.

It can be written as a sum of positive squares in only one way, i.e., 1119364 + 191844 = 1058^2 + 438^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1311191 and 1311200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81943 + ... + 81958.

2^1311208 is an apocalyptic number.

It is an amenable number.

1311208 is a deficient number, since it is larger than the sum of its proper divisors (1147322).

1311208 is a wasteful number, since it uses less digits than its factorization.

1311208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163907 (or 163903 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1311208 is about 1145.0799098753. The cubic root of 1311208 is about 109.4520407423.

Adding to 1311208 its reverse (8021131), we get a palindrome (9332339).

The spelling of 1311208 in words is "one million, three hundred eleven thousand, two hundred eight".