312404104121 has 4 divisors (see below), whose sum is σ = 312405225972. Its totient is φ = 312402982272.

The previous prime is 312404104093. The next prime is 312404104123. The reversal of 312404104121 is 121401404213.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 121401404213 = 147029 ⋅825697.

It can be written as a sum of positive squares in 2 ways, for example, as 64420023721 + 247984080400 = 253811^2 + 497980^2 .

It is a cyclic number.

It is not a de Polignac number, because 312404104121 - 2¹⁸ = 312403841977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312404104123) 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, 209585 + ... + 817761.

It is an arithmetic number, because the mean of its divisors is an integer number (78101306493).

Almost surely, 2^312404104121 is an apocalyptic number.

It is an amenable number.

312404104121 is a deficient number, since it is larger than the sum of its proper divisors (1121851).

312404104121 is an equidigital number, since it uses as much as digits as its factorization.

312404104121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121850.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 312404104121 its reverse (121401404213), we get a palindrome (433805508334).

The spelling of 312404104121 in words is "three hundred twelve billion, four hundred four million, one hundred four thousand, one hundred twenty-one".