1311393 has 16 divisors (see below), whose sum is σ = 1843200. Its totient is φ = 828240.

The previous prime is 1311383. The next prime is 1311403. The reversal of 1311393 is 3931131.

It is an interprime number because it is at equal distance from previous prime (1311383) and next prime (1311403).

It is not a de Polignac number, because 1311393 - 2⁴ = 1311377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5368 + ... + 5606.

It is an arithmetic number, because the mean of its divisors is an integer number (115200).

2^1311393 is an apocalyptic number.

It is an amenable number.

1311393 is a deficient number, since it is larger than the sum of its proper divisors (531807).

1311393 is a wasteful number, since it uses less digits than its factorization.

1311393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332.

The product of its digits is 243, while the sum is 21.

The square root of 1311393 is about 1145.1606874147. The cubic root of 1311393 is about 109.4571880760.

The spelling of 1311393 in words is "one million, three hundred eleven thousand, three hundred ninety-three".