421334315251 has 8 divisors (see below), whose sum is σ = 421762363344. Its totient is φ = 420906349440.

The previous prime is 421334315201. The next prime is 421334315257. The reversal of 421334315251 is 152513433124.

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 421334315251 - 2¹¹ = 421334313203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421334315257) 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, 17455471 + ... + 17479591.

It is an arithmetic number, because the mean of its divisors is an integer number (52720295418).

Almost surely, 2^421334315251 is an apocalyptic number.

421334315251 is a deficient number, since it is larger than the sum of its proper divisors (428048093).

421334315251 is a wasteful number, since it uses less digits than its factorization.

421334315251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41141.

The product of its digits is 43200, while the sum is 34.

Adding to 421334315251 its reverse (152513433124), we get a palindrome (573847748375).

The spelling of 421334315251 in words is "four hundred twenty-one billion, three hundred thirty-four million, three hundred fifteen thousand, two hundred fifty-one".