305204231123 has 4 divisors (see below), whose sum is σ = 332950070328. Its totient is φ = 277458391920.

The previous prime is 305204231069. The next prime is 305204231141. The reversal of 305204231123 is 321132402503.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321132402503 = 11 ⋅29193854773.

It is a cyclic number.

It is not a de Polignac number, because 305204231123 - 2¹⁴ = 305204214739 is a prime.

It is a super-2 number, since 2×305204231123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 305204231092 and 305204231101.

It is not an unprimeable number, because it can be changed into a prime (305204231183) 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, 13872919586 + ... + 13872919607.

It is an arithmetic number, because the mean of its divisors is an integer number (83237517582).

Almost surely, 2^305204231123 is an apocalyptic number.

305204231123 is a deficient number, since it is larger than the sum of its proper divisors (27745839205).

305204231123 is a wasteful number, since it uses less digits than its factorization.

305204231123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27745839204.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 305204231123 its reverse (321132402503), we get a palindrome (626336633626).

The spelling of 305204231123 in words is "three hundred five billion, two hundred four million, two hundred thirty-one thousand, one hundred twenty-three".