321430123120243 has 4 divisors (see below), whose sum is σ = 322775019033120. Its totient is φ = 320085227207368.

The previous prime is 321430123120123. The next prime is 321430123120277. The reversal of 321430123120243 is 342021321034123.

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 321430123120243 - 2²⁵ = 321430089565811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321430123121243) 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, 672447956080 + ... + 672447956557.

It is an arithmetic number, because the mean of its divisors is an integer number (80693754758280).

Almost surely, 2^{321430123120243} is an apocalyptic number.

321430123120243 is a deficient number, since it is larger than the sum of its proper divisors (1344895912877).

321430123120243 is a wasteful number, since it uses less digits than its factorization.

321430123120243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344895912876.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 321430123120243 its reverse (342021321034123), we get a palindrome (663451444154366).

The spelling of 321430123120243 in words is "three hundred twenty-one trillion, four hundred thirty billion, one hundred twenty-three million, one hundred twenty thousand, two hundred forty-three".