315141221000 has 64 divisors (see below), whose sum is σ = 738424702080. Its totient is φ = 125886532800.

The previous prime is 315141220997. The next prime is 315141221027. The reversal of 315141221000 is 122141513.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 15 ways as a sum of consecutive naturals, for example, 530927 + ... + 955073.

It is an arithmetic number, because the mean of its divisors is an integer number (11537885970).

Almost surely, 2^315141221000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 315141221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369212351040).

315141221000 is an abundant number, since it is smaller than the sum of its proper divisors (423283481080).

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

315141221000 is a wasteful number, since it uses less digits than its factorization.

315141221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424911 (or 424897 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 315141221000 its reverse (122141513), we get a palindrome (315263362513).

The spelling of 315141221000 in words is "three hundred fifteen billion, one hundred forty-one million, two hundred twenty-one thousand".