315342045021 has 8 divisors (see below), whose sum is σ = 421141961440. Its totient is φ = 209885079312.

The previous prime is 315342045019. The next prime is 315342045043. The reversal of 315342045021 is 120540243513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 315342045021 - 2¹ = 315342045019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 315342045021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315342043021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85735531 + ... + 85739208.

It is an arithmetic number, because the mean of its divisors is an integer number (52642745180).

Almost surely, 2^315342045021 is an apocalyptic number.

It is an amenable number.

315342045021 is a deficient number, since it is larger than the sum of its proper divisors (105799916419).

315342045021 is a wasteful number, since it uses less digits than its factorization.

315342045021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171475355.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 315342045021 its reverse (120540243513), we get a palindrome (435882288534).

The spelling of 315342045021 in words is "three hundred fifteen billion, three hundred forty-two million, forty-five thousand, twenty-one".