432021216531 has 8 divisors (see below), whose sum is σ = 577904603584. Its totient is φ = 287075986920.

The previous prime is 432021216511. The next prime is 432021216547. The reversal of 432021216531 is 135612120234.

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

It is a de Polignac number, because none of the positive numbers 2^k-432021216531 is a prime.

It is a super-2 number, since 2×432021216531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (432021216511) 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 7 ways as a sum of consecutive naturals, for example, 234538285 + ... + 234540126.

It is an arithmetic number, because the mean of its divisors is an integer number (72238075448).

Almost surely, 2^432021216531 is an apocalyptic number.

432021216531 is a deficient number, since it is larger than the sum of its proper divisors (145883387053).

432021216531 is a wasteful number, since it uses less digits than its factorization.

432021216531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469078721.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 432021216531 its reverse (135612120234), we get a palindrome (567633336765).

The spelling of 432021216531 in words is "four hundred thirty-two billion, twenty-one million, two hundred sixteen thousand, five hundred thirty-one".