315223505450 has 96 divisors (see below), whose sum is σ = 704546156160. Its totient is φ = 102638995200.

The previous prime is 315223505419. The next prime is 315223505459. The reversal of 315223505450 is 54505322513.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 315223505450.

It is not an unprimeable number, because it can be changed into a prime (315223505459) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 364589 + ... + 873711.

It is an arithmetic number, because the mean of its divisors is an integer number (7339022460).

Almost surely, 2^315223505450 is an apocalyptic number.

315223505450 is an abundant number, since it is smaller than the sum of its proper divisors (389322650710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315223505450 is a wasteful number, since it uses less digits than its factorization.

315223505450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509232 (or 509227 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 315223505450 its reverse (54505322513), we get a palindrome (369728827963).

The spelling of 315223505450 in words is "three hundred fifteen billion, two hundred twenty-three million, five hundred five thousand, four hundred fifty".