1311308 has 6 divisors (see below), whose sum is σ = 2294796. Its totient is φ = 655652.

The previous prime is 1311307. The next prime is 1311311. The reversal of 1311308 is 8031131.

It is not an unprimeable number, because it can be changed into a prime (1311301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163910 + ... + 163917.

It is an arithmetic number, because the mean of its divisors is an integer number (382466).

2^1311308 is an apocalyptic number.

It is an amenable number.

1311308 is a deficient number, since it is larger than the sum of its proper divisors (983488).

1311308 is a wasteful number, since it uses less digits than its factorization.

1311308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327831 (or 327829 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1311308 is about 1145.1235741177. The cubic root of 1311308 is about 109.4548231449.

Adding to 1311308 its reverse (8031131), we get a palindrome (9342439).

The spelling of 1311308 in words is "one million, three hundred eleven thousand, three hundred eight".