102423344321 has 4 divisors (see below), whose sum is σ = 102507506052. Its totient is φ = 102339182592.

The previous prime is 102423344299. The next prime is 102423344323. The reversal of 102423344321 is 123443324201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23145058225 + 79278286096 = 152135^2 + 281564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102423344321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102423344323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42079040 + ... + 42081473.

It is an arithmetic number, because the mean of its divisors is an integer number (25626876513).

Almost surely, 2^102423344321 is an apocalyptic number.

It is an amenable number.

102423344321 is a deficient number, since it is larger than the sum of its proper divisors (84161731).

102423344321 is an equidigital number, since it uses as much as digits as its factorization.

102423344321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84161730.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 102423344321 its reverse (123443324201), we get a palindrome (225866668522).

The spelling of 102423344321 in words is "one hundred two billion, four hundred twenty-three million, three hundred forty-four thousand, three hundred twenty-one".