1331693 has 4 divisors (see below), whose sum is σ = 1452768. Its totient is φ = 1210620.

The previous prime is 1331683. The next prime is 1331699. The reversal of 1331693 is 3961331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1331693 - 2⁸ = 1331437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60521 + ... + 60542.

It is an arithmetic number, because the mean of its divisors is an integer number (363192).

2^1331693 is an apocalyptic number.

It is an amenable number.

1331693 is a deficient number, since it is larger than the sum of its proper divisors (121075).

1331693 is a wasteful number, since it uses less digits than its factorization.

1331693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121074.

The product of its digits is 1458, while the sum is 26.

The square root of 1331693 is about 1153.9900346190. The cubic root of 1331693 is about 110.0190875968.

The spelling of 1331693 in words is "one million, three hundred thirty-one thousand, six hundred ninety-three".