1431693 has 12 divisors (see below), whose sum is σ = 2079168. Its totient is φ = 949320.

The previous prime is 1431659. The next prime is 1431713. The reversal of 1431693 is 3961341.

It is a de Polignac number, because none of the positive numbers 2^k-1431693 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431613) 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 11 ways as a sum of consecutive naturals, for example, 2146 + ... + 2732.

It is an arithmetic number, because the mean of its divisors is an integer number (173264).

2^1431693 is an apocalyptic number.

It is an amenable number.

1431693 is a deficient number, since it is larger than the sum of its proper divisors (647475).

1431693 is a wasteful number, since it uses less digits than its factorization.

1431693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864 (or 861 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 1431693 is about 1196.5337437783. The cubic root of 1431693 is about 112.7067605088.

The spelling of 1431693 in words is "one million, four hundred thirty-one thousand, six hundred ninety-three".