315221231456 has 12 divisors (see below), whose sum is σ = 620591799492. Its totient is φ = 157610615712.

The previous prime is 315221231447. The next prime is 315221231503. The reversal of 315221231456 is 654132122513.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4925331710 + ... + 4925331773.

It is an arithmetic number, because the mean of its divisors is an integer number (51715983291).

Almost surely, 2^315221231456 is an apocalyptic number.

It is an amenable number.

315221231456 is a deficient number, since it is larger than the sum of its proper divisors (305370568036).

315221231456 is an equidigital number, since it uses as much as digits as its factorization.

315221231456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9850663493 (or 9850663485 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

Adding to 315221231456 its reverse (654132122513), we get a palindrome (969353353969).

The spelling of 315221231456 in words is "three hundred fifteen billion, two hundred twenty-one million, two hundred thirty-one thousand, four hundred fifty-six".