312141203242321 has 4 divisors (see below), whose sum is σ = 319754403321444. Its totient is φ = 304528003163200.

The previous prime is 312141203242283. The next prime is 312141203242343. The reversal of 312141203242321 is 123242302141213.

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 22599669795921 + 289541533446400 = 4753911^2 + 17015920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312141203242321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312141203243321) 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, 3806600039500 + ... + 3806600039581.

It is an arithmetic number, because the mean of its divisors is an integer number (79938600830361).

Almost surely, 2^{312141203242321} is an apocalyptic number.

It is an amenable number.

312141203242321 is a deficient number, since it is larger than the sum of its proper divisors (7613200079123).

312141203242321 is an equidigital number, since it uses as much as digits as its factorization.

312141203242321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7613200079122.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 312141203242321 its reverse (123242302141213), we get a palindrome (435383505383534).

The spelling of 312141203242321 in words is "three hundred twelve trillion, one hundred forty-one billion, two hundred three million, two hundred forty-two thousand, three hundred twenty-one".