315731585420 has 12 divisors (see below), whose sum is σ = 663036329424. Its totient is φ = 126292634160.

The previous prime is 315731585419. The next prime is 315731585431. The reversal of 315731585420 is 24585137513.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7893289616 + ... + 7893289655.

It is an arithmetic number, because the mean of its divisors is an integer number (55253027452).

Almost surely, 2^315731585420 is an apocalyptic number.

It is an amenable number.

315731585420 is an abundant number, since it is smaller than the sum of its proper divisors (347304744004).

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

315731585420 is a wasteful number, since it uses less digits than its factorization.

315731585420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15786579280 (or 15786579278 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 315731585420 in words is "three hundred fifteen billion, seven hundred thirty-one million, five hundred eighty-five thousand, four hundred twenty".