1311608 has 16 divisors (see below), whose sum is σ = 2589000. Its totient is φ = 621216.

The previous prime is 1311599. The next prime is 1311617. The reversal of 1311608 is 8061131.

It is an interprime number because it is at equal distance from previous prime (1311599) and next prime (1311617).

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1311608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4163 + ... + 4466.

2^1311608 is an apocalyptic number.

It is an amenable number.

1311608 is a deficient number, since it is larger than the sum of its proper divisors (1277392).

1311608 is a wasteful number, since it uses less digits than its factorization.

1311608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8654 (or 8650 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1311608 is about 1145.2545568562. The cubic root of 1311608 is about 109.4631695042.

Adding to 1311608 its reverse (8061131), we get a palindrome (9372739).

The spelling of 1311608 in words is "one million, three hundred eleven thousand, six hundred eight".