243421003411403 has 4 divisors (see below), whose sum is σ = 248600173696800. Its totient is φ = 238241833126008.

The previous prime is 243421003411379. The next prime is 243421003411409. The reversal of 243421003411403 is 304114300124342.

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 243421003411403 - 2³⁸ = 243146125504459 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 243421003411403.

It is not an unprimeable number, because it can be changed into a prime (243421003411409) 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, 2589585142628 + ... + 2589585142721.

It is an arithmetic number, because the mean of its divisors is an integer number (62150043424200).

Almost surely, 2^{243421003411403} is an apocalyptic number.

243421003411403 is a deficient number, since it is larger than the sum of its proper divisors (5179170285397).

243421003411403 is an equidigital number, since it uses as much as digits as its factorization.

243421003411403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5179170285396.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 243421003411403 its reverse (304114300124342), we get a palindrome (547535303535745).

The spelling of 243421003411403 in words is "two hundred forty-three trillion, four hundred twenty-one billion, three million, four hundred eleven thousand, four hundred three".