315522105054421 has 4 divisors (see below), whose sum is σ = 315528437964672. Its totient is φ = 315515772144172.

The previous prime is 315522105054413. The next prime is 315522105054469. The reversal of 315522105054421 is 124450501225513.

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.

It is a cyclic number.

It is not a de Polignac number, because 315522105054421 - 2³ = 315522105054413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315522105054721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3166380391 + ... + 3166480036.

It is an arithmetic number, because the mean of its divisors is an integer number (78882109491168).

Almost surely, 2^{315522105054421} is an apocalyptic number.

It is an amenable number.

315522105054421 is a deficient number, since it is larger than the sum of its proper divisors (6332910251).

315522105054421 is an equidigital number, since it uses as much as digits as its factorization.

315522105054421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6332910250.

The product of its (nonzero) digits is 240000, while the sum is 40.

Adding to 315522105054421 its reverse (124450501225513), we get a palindrome (439972606279934).

The spelling of 315522105054421 in words is "three hundred fifteen trillion, five hundred twenty-two billion, one hundred five million, fifty-four thousand, four hundred twenty-one".