315272144728421 has 8 divisors (see below), whose sum is σ = 315288036910560. Its totient is φ = 315256253009328.

The previous prime is 315272144728399. The next prime is 315272144728433. The reversal of 315272144728421 is 124827441272513.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 315272144728421 - 2⁴² = 310874098217317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315272144721421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2551777970 + ... + 2551901516.

It is an arithmetic number, because the mean of its divisors is an integer number (39411004613820).

Almost surely, 2^{315272144728421} is an apocalyptic number.

It is an amenable number.

315272144728421 is a deficient number, since it is larger than the sum of its proper divisors (15892182139).

315272144728421 is a wasteful number, since it uses less digits than its factorization.

315272144728421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231523.

The product of its digits is 6021120, while the sum is 53.

The spelling of 315272144728421 in words is "three hundred fifteen trillion, two hundred seventy-two billion, one hundred forty-four million, seven hundred twenty-eight thousand, four hundred twenty-one".