202321240423 has 4 divisors (see below), whose sum is σ = 202758219808. Its totient is φ = 201884261040.

The previous prime is 202321240417. The next prime is 202321240439. The reversal of 202321240423 is 324042123202.

202321240423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202321240423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202321240483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218488998 + ... + 218489923.

It is an arithmetic number, because the mean of its divisors is an integer number (50689554952).

Almost surely, 2^202321240423 is an apocalyptic number.

202321240423 is a deficient number, since it is larger than the sum of its proper divisors (436979385).

202321240423 is an equidigital number, since it uses as much as digits as its factorization.

202321240423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436979384.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 202321240423 its reverse (324042123202), we get a palindrome (526363363625).

The spelling of 202321240423 in words is "two hundred two billion, three hundred twenty-one million, two hundred forty thousand, four hundred twenty-three".