421312303344243 has 16 divisors (see below), whose sum is σ = 570679471676160. Its totient is φ = 276435736058784.

The previous prime is 421312303344197. The next prime is 421312303344367. The reversal of 421312303344243 is 342443303213124.

It is not a de Polignac number, because 421312303344243 - 2²⁰ = 421312302295667 is a prime.

It is a super-2 number, since 2×421312303344243² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421312303334243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3216697408 + ... + 3216828381.

It is an arithmetic number, because the mean of its divisors is an integer number (35667466979760).

Almost surely, 2^{421312303344243} is an apocalyptic number.

421312303344243 is a deficient number, since it is larger than the sum of its proper divisors (149367168331917).

421312303344243 is a wasteful number, since it uses less digits than its factorization.

421312303344243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6433526138.

The product of its (nonzero) digits is 497664, while the sum is 39.

Adding to 421312303344243 its reverse (342443303213124), we get a palindrome (763755606557367).

The spelling of 421312303344243 in words is "four hundred twenty-one trillion, three hundred twelve billion, three hundred three million, three hundred forty-four thousand, two hundred forty-three".