421533860315231 has 4 divisors (see below), whose sum is σ = 421534431833352. Its totient is φ = 421533288797112.

The previous prime is 421533860315221. The next prime is 421533860315233. The reversal of 421533860315231 is 132513068335124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421533860315231 - 2¹⁰ = 421533860314207 is a prime.

It is a super-2 number, since 2×421533860315231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421533860315233) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 284651276 + ... + 286128321.

It is an arithmetic number, because the mean of its divisors is an integer number (105383607958338).

Almost surely, 2^{421533860315231} is an apocalyptic number.

421533860315231 is a deficient number, since it is larger than the sum of its proper divisors (571518121).

421533860315231 is an equidigital number, since it uses as much as digits as its factorization.

421533860315231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571518120.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 421533860315231 in words is "four hundred twenty-one trillion, five hundred thirty-three billion, eight hundred sixty million, three hundred fifteen thousand, two hundred thirty-one".