1023215 has 8 divisors (see below), whose sum is σ = 1239408. Its totient is φ = 810880.

The previous prime is 1023203. The next prime is 1023221. The reversal of 1023215 is 5123201.

It is a happy number.

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

It is not a de Polignac number, because 1023215 - 2⁴ = 1023199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341 + ... + 1470.

It is an arithmetic number, because the mean of its divisors is an integer number (154926).

2^1023215 is an apocalyptic number.

1023215 is a deficient number, since it is larger than the sum of its proper divisors (216193).

1023215 is a wasteful number, since it uses less digits than its factorization.

1023215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1023215 is about 1011.5409037701. The cubic root of 1023215 is about 100.7679212087.

Subtracting from 1023215 its sum of digits (14), we obtain a palindrome (1023201).

Adding to 1023215 its reverse (5123201), we get a palindrome (6146416).

The spelling of 1023215 in words is "one million, twenty-three thousand, two hundred fifteen".