315522620402243 has 4 divisors (see below), whose sum is σ = 315522658768680. Its totient is φ = 315522582035808.

The previous prime is 315522620402237. The next prime is 315522620402273. The reversal of 315522620402243 is 342204026225513.

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.

It is a cyclic number.

It is not a de Polignac number, because 315522620402243 - 2⁴² = 311124573891139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 315522620402243.

It is not an unprimeable number, because it can be changed into a prime (315522620402273) 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, 1274153 + ... + 25152906.

It is an arithmetic number, because the mean of its divisors is an integer number (78880664692170).

Almost surely, 2^{315522620402243} is an apocalyptic number.

315522620402243 is a deficient number, since it is larger than the sum of its proper divisors (38366437).

315522620402243 is a wasteful number, since it uses less digits than its factorization.

315522620402243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38366436.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 315522620402243 its reverse (342204026225513), we get a palindrome (657726646627756).

The spelling of 315522620402243 in words is "three hundred fifteen trillion, five hundred twenty-two billion, six hundred twenty million, four hundred two thousand, two hundred forty-three".