315205253420 has 24 divisors (see below), whose sum is σ = 696769508400. Its totient is φ = 119446201152.

The previous prime is 315205253387. The next prime is 315205253501. The reversal of 315205253420 is 24352502513.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 414743375 + ... + 414744134.

It is an arithmetic number, because the mean of its divisors is an integer number (29032062850).

Almost surely, 2^315205253420 is an apocalyptic number.

It is an amenable number.

315205253420 is an abundant number, since it is smaller than the sum of its proper divisors (381564254980).

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

315205253420 is a wasteful number, since it uses less digits than its factorization.

315205253420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829487537 (or 829487535 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 315205253420 its reverse (24352502513), we get a palindrome (339557755933).

The spelling of 315205253420 in words is "three hundred fifteen billion, two hundred five million, two hundred fifty-three thousand, four hundred twenty".