1002021323 has 2 divisors, whose sum is σ = 1002021324. Its totient is φ = 1002021322.

The previous prime is 1002021299. The next prime is 1002021329. The reversal of 1002021323 is 3231202001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1002021323 - 2²⁰ = 1000972747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002021298 and 1002021307.

It is not a weakly prime, because it can be changed into another prime (1002021329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501010661 + 501010662.

It is an arithmetic number, because the mean of its divisors is an integer number (501010662).

Almost surely, 2^1002021323 is an apocalyptic number.

1002021323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002021323 is an equidigital number, since it uses as much as digits as its factorization.

1002021323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1002021323 is about 31654.7203904884. The cubic root of 1002021323 is about 1000.6733208706.

Adding to 1002021323 its reverse (3231202001), we get a palindrome (4233223324).

The spelling of 1002021323 in words is "one billion, two million, twenty-one thousand, three hundred twenty-three".