320103342421 has 4 divisors (see below), whose sum is σ = 334020879072. Its totient is φ = 306185805772.

The previous prime is 320103342407. The next prime is 320103342437. The reversal of 320103342421 is 124243301023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124243301023 = 103 ⋅1206245641.

It is a cyclic number.

It is not a de Polignac number, because 320103342421 - 2¹⁵ = 320103309653 is a prime.

It is a super-2 number, since 2×320103342421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320103342721) 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, 6958768291 + ... + 6958768336.

It is an arithmetic number, because the mean of its divisors is an integer number (83505219768).

Almost surely, 2^320103342421 is an apocalyptic number.

It is an amenable number.

320103342421 is a deficient number, since it is larger than the sum of its proper divisors (13917536651).

320103342421 is a wasteful number, since it uses less digits than its factorization.

320103342421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13917536650.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 320103342421 its reverse (124243301023), we get a palindrome (444346643444).

The spelling of 320103342421 in words is "three hundred twenty billion, one hundred three million, three hundred forty-two thousand, four hundred twenty-one".