102021323 has 4 divisors (see below), whose sum is σ = 103167720. Its totient is φ = 100874928.

The previous prime is 102021299. The next prime is 102021329. The reversal of 102021323 is 323120201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102021323 - 2¹⁰ = 102020299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102021298 and 102021307.

It is not an unprimeable number, because it can be changed into a prime (102021329) 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 3 ways as a sum of consecutive naturals, for example, 573065 + ... + 573242.

It is an arithmetic number, because the mean of its divisors is an integer number (25791930).

Almost surely, 2^102021323 is an apocalyptic number.

102021323 is a deficient number, since it is larger than the sum of its proper divisors (1146397).

102021323 is an equidigital number, since it uses as much as digits as its factorization.

102021323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146396.

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

The square root of 102021323 is about 10100.5605290004. The cubic root of 102021323 is about 467.2654287584.

Adding to 102021323 its reverse (323120201), we get a palindrome (425141524).

The spelling of 102021323 in words is "one hundred two million, twenty-one thousand, three hundred twenty-three".