431421531005 has 4 divisors (see below), whose sum is σ = 517705837212. Its totient is φ = 345137224800.

The previous prime is 431421530971. The next prime is 431421531053. The reversal of 431421531005 is 500135124134.

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

It can be written as a sum of positive squares in 2 ways, for example, as 239623956196 + 191797574809 = 489514^2 + 437947^2 .

It is not a de Polignac number, because 431421531005 - 2¹⁶ = 431421465469 is a prime.

It is a super-2 number, since 2×431421531005² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43142153096 + ... + 43142153105.

It is an arithmetic number, because the mean of its divisors is an integer number (129426459303).

Almost surely, 2^431421531005 is an apocalyptic number.

It is an amenable number.

431421531005 is a deficient number, since it is larger than the sum of its proper divisors (86284306207).

431421531005 is an equidigital number, since it uses as much as digits as its factorization.

431421531005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86284306206.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 431421531005 its reverse (500135124134), we get a palindrome (931556655139).

The spelling of 431421531005 in words is "four hundred thirty-one billion, four hundred twenty-one million, five hundred thirty-one thousand, five".