312141421334521 has 2 divisors, whose sum is σ = 312141421334522. Its totient is φ = 312141421334520.

The previous prime is 312141421334459. The next prime is 312141421334539. The reversal of 312141421334521 is 125433124141213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311960762332921 + 180659001600 = 17662411^2 + 425040^2 .

It is a cyclic number.

It is not a de Polignac number, because 312141421334521 - 2²⁷ = 312141287116793 is a prime.

It is not a weakly prime, because it can be changed into another prime (312141421334321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156070710667260 + 156070710667261.

It is an arithmetic number, because the mean of its divisors is an integer number (156070710667261).

Almost surely, 2^{312141421334521} is an apocalyptic number.

It is an amenable number.

312141421334521 is a deficient number, since it is larger than the sum of its proper divisors (1).

312141421334521 is an equidigital number, since it uses as much as digits as its factorization.

312141421334521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

Adding to 312141421334521 its reverse (125433124141213), we get a palindrome (437574545475734).

The spelling of 312141421334521 in words is "three hundred twelve trillion, one hundred forty-one billion, four hundred twenty-one million, three hundred thirty-four thousand, five hundred twenty-one".