431334112021 has 4 divisors (see below), whose sum is σ = 431338296544. Its totient is φ = 431329927500.

The previous prime is 431334112019. The next prime is 431334112063. The reversal of 431334112021 is 120211433134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 431334112021 - 2¹ = 431334112019 is a prime.

It is a super-3 number, since 3×431334112021³ (a number of 36 digits) contains 333 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 (431334112621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1933635 + ... + 2145136.

It is an arithmetic number, because the mean of its divisors is an integer number (107834574136).

Almost surely, 2^431334112021 is an apocalyptic number.

It is an amenable number.

431334112021 is a deficient number, since it is larger than the sum of its proper divisors (4184523).

431334112021 is a wasteful number, since it uses less digits than its factorization.

431334112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184522.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 431334112021 its reverse (120211433134), we get a palindrome (551545545155).

The spelling of 431334112021 in words is "four hundred thirty-one billion, three hundred thirty-four million, one hundred twelve thousand, twenty-one".