306213421253223 has 16 divisors (see below), whose sum is σ = 445807357687296. Its totient is φ = 185414717634240.

The previous prime is 306213421253203. The next prime is 306213421253263. The reversal of 306213421253223 is 322352124312603.

It is not a de Polignac number, because 306213421253223 - 2²⁵ = 306213387698791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306213421253203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4229314111 + ... + 4229386512.

It is an arithmetic number, because the mean of its divisors is an integer number (27862959855456).

Almost surely, 2^{306213421253223} is an apocalyptic number.

306213421253223 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

306213421253223 is a deficient number, since it is larger than the sum of its proper divisors (139593936434073).

306213421253223 is a wasteful number, since it uses less digits than its factorization.

306213421253223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8458701734.

The product of its (nonzero) digits is 311040, while the sum is 39.

Adding to 306213421253223 its reverse (322352124312603), we get a palindrome (628565545565826).

The spelling of 306213421253223 in words is "three hundred six trillion, two hundred thirteen billion, four hundred twenty-one million, two hundred fifty-three thousand, two hundred twenty-three".