321200312113 has 4 divisors (see below), whose sum is σ = 321658515828. Its totient is φ = 320742108400.

The previous prime is 321200312093. The next prime is 321200312117. The reversal of 321200312113 is 311213002123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121991628529 + 199208683584 = 349273^2 + 446328^2 .

It is a cyclic number.

It is not a de Polignac number, because 321200312113 - 2¹⁷ = 321200181041 is a prime.

It is a super-2 number, since 2×321200312113² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321200312117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229100806 + ... + 229102207.

It is an arithmetic number, because the mean of its divisors is an integer number (80414628957).

Almost surely, 2^321200312113 is an apocalyptic number.

It is an amenable number.

321200312113 is a deficient number, since it is larger than the sum of its proper divisors (458203715).

321200312113 is an equidigital number, since it uses as much as digits as its factorization.

321200312113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458203714.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 321200312113 its reverse (311213002123), we get a palindrome (632413314236).

The spelling of 321200312113 in words is "three hundred twenty-one billion, two hundred million, three hundred twelve thousand, one hundred thirteen".