421203210323 has 16 divisors (see below), whose sum is σ = 523056138240. Its totient is φ = 330996456000.

The previous prime is 421203210301. The next prime is 421203210383. The reversal of 421203210323 is 323012302124.

It is not a de Polignac number, because 421203210323 - 2²⁶ = 421136101459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421203210383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51075578 + ... + 51083823.

It is an arithmetic number, because the mean of its divisors is an integer number (32691008640).

Almost surely, 2^421203210323 is an apocalyptic number.

421203210323 is a deficient number, since it is larger than the sum of its proper divisors (101852927917).

421203210323 is a wasteful number, since it uses less digits than its factorization.

421203210323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102159458.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 421203210323 its reverse (323012302124), we get a palindrome (744215512447).

The spelling of 421203210323 in words is "four hundred twenty-one billion, two hundred three million, two hundred ten thousand, three hundred twenty-three".