1023345 has 12 divisors (see below), whose sum is σ = 1773876. Its totient is φ = 545760.

The previous prime is 1023329. The next prime is 1023353. The reversal of 1023345 is 5433201.

It can be written as a sum of positive squares in 2 ways, for example, as 207936 + 815409 = 456^2 + 903^2 .

It is not a de Polignac number, because 1023345 - 2⁴ = 1023329 is a prime.

1023345 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 11326 + ... + 11415.

It is an arithmetic number, because the mean of its divisors is an integer number (147823).

2^1023345 is an apocalyptic number.

1023345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1023345 is a deficient number, since it is larger than the sum of its proper divisors (750531).

1023345 is a wasteful number, since it uses less digits than its factorization.

1023345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22752 (or 22749 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 1023345 is about 1011.6051601292. The cubic root of 1023345 is about 100.7721885669.

Adding to 1023345 its reverse (5433201), we get a palindrome (6456546).

The spelling of 1023345 in words is "one million, twenty-three thousand, three hundred forty-five".