1311693 has 8 divisors (see below), whose sum is σ = 1754400. Its totient is φ = 871728.

The previous prime is 1311691. The next prime is 1311701. The reversal of 1311693 is 3961131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1311693 - 2¹ = 1311691 is a prime.

It is a super-3 number, since 3×1311693³ = 6770455023333388671, which contains 333 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311691) 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, 1098 + ... + 1956.

It is an arithmetic number, because the mean of its divisors is an integer number (219300).

2^1311693 is an apocalyptic number.

It is an amenable number.

1311693 is a deficient number, since it is larger than the sum of its proper divisors (442707).

1311693 is an equidigital number, since it uses as much as digits as its factorization.

1311693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371.

The product of its digits is 486, while the sum is 24.

The square root of 1311693 is about 1145.2916659087. The cubic root of 1311693 is about 109.4655340747.

The spelling of 1311693 in words is "one million, three hundred eleven thousand, six hundred ninety-three".