315220501223 has 4 divisors (see below), whose sum is σ = 315710735928. Its totient is φ = 314730266520.

The previous prime is 315220501217. The next prime is 315220501247. The reversal of 315220501223 is 322105022513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322105022513 = 37 ⋅8705541149.

It is a cyclic number.

It is not a de Polignac number, because 315220501223 - 2⁴ = 315220501207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315220501192 and 315220501201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315220501283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245116388 + ... + 245117673.

It is an arithmetic number, because the mean of its divisors is an integer number (78927683982).

Almost surely, 2^315220501223 is an apocalyptic number.

315220501223 is a deficient number, since it is larger than the sum of its proper divisors (490234705).

315220501223 is an equidigital number, since it uses as much as digits as its factorization.

315220501223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490234704.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 315220501223 its reverse (322105022513), we get a palindrome (637325523736).

The spelling of 315220501223 in words is "three hundred fifteen billion, two hundred twenty million, five hundred one thousand, two hundred twenty-three".