312442321121 has 4 divisors (see below), whose sum is σ = 357076938432. Its totient is φ = 267807703812.

The previous prime is 312442321039. The next prime is 312442321127. The reversal of 312442321121 is 121123244213.

It is a happy number.

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: 121123244213 = 2713 ⋅44645501.

It is a cyclic number.

It is not a de Polignac number, because 312442321121 - 2¹⁰ = 312442320097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (312442321127) 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, 22317308645 + ... + 22317308658.

It is an arithmetic number, because the mean of its divisors is an integer number (89269234608).

Almost surely, 2^312442321121 is an apocalyptic number.

It is an amenable number.

312442321121 is a deficient number, since it is larger than the sum of its proper divisors (44634617311).

312442321121 is an equidigital number, since it uses as much as digits as its factorization.

312442321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44634617310.

The product of its digits is 2304, while the sum is 26.

Adding to 312442321121 its reverse (121123244213), we get a palindrome (433565565334).

The spelling of 312442321121 in words is "three hundred twelve billion, four hundred forty-two million, three hundred twenty-one thousand, one hundred twenty-one".