1000021323 has 16 divisors (see below), whose sum is σ = 1525121280. Its totient is φ = 570961056.

The previous prime is 1000021291. The next prime is 1000021333. The reversal of 1000021323 is 3231200001.

It is a happy number.

It is not a de Polignac number, because 1000021323 - 2⁵ = 1000021291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000021299 and 1000021308.

It is not an unprimeable number, because it can be changed into a prime (1000021333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6436 + ... + 45182.

It is an arithmetic number, because the mean of its divisors is an integer number (95320080).

Almost surely, 2^1000021323 is an apocalyptic number.

1000021323 is a deficient number, since it is larger than the sum of its proper divisors (525099957).

1000021323 is a wasteful number, since it uses less digits than its factorization.

1000021323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39986.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1000021323 is about 31623.1137461193. The cubic root of 1000021323 is about 1000.0071076161.

Adding to 1000021323 its reverse (3231200001), we get a palindrome (4231221324).

The spelling of 1000021323 in words is "one billion, twenty-one thousand, three hundred twenty-three".