202123100323 has 4 divisors (see below), whose sum is σ = 202137064920. Its totient is φ = 202109135728.

The previous prime is 202123100321. The next prime is 202123100327. The reversal of 202123100323 is 323001321202.

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 202123100323 - 2¹ = 202123100321 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 202123100323.

It is not an unprimeable number, because it can be changed into a prime (202123100321) 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, 6960565 + ... + 6989542.

It is an arithmetic number, because the mean of its divisors is an integer number (50534266230).

Almost surely, 2^202123100323 is an apocalyptic number.

202123100323 is a deficient number, since it is larger than the sum of its proper divisors (13964597).

202123100323 is a wasteful number, since it uses less digits than its factorization.

202123100323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13964596.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 202123100323 its reverse (323001321202), we get a palindrome (525124421525).

The spelling of 202123100323 in words is "two hundred two billion, one hundred twenty-three million, one hundred thousand, three hundred twenty-three".