1023385 has 16 divisors (see below), whose sum is σ = 1399680. Its totient is φ = 711040.

The previous prime is 1023367. The next prime is 1023389. The reversal of 1023385 is 5833201.

1023385 = 300² + 301² + ... + 310².

It is not a de Polignac number, because 1023385 - 2⁵ = 1023353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1023389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 861 + ... + 1669.

It is an arithmetic number, because the mean of its divisors is an integer number (87480).

2^1023385 is an apocalyptic number.

It is an amenable number.

1023385 is a deficient number, since it is larger than the sum of its proper divisors (376295).

1023385 is a wasteful number, since it uses less digits than its factorization.

1023385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1023385 is about 1011.6249304955. The cubic root of 1023385 is about 100.7735015276.

Adding to 1023385 its reverse (5833201), we get a palindrome (6856586).

The spelling of 1023385 in words is "one million, twenty-three thousand, three hundred eighty-five".