431111041212205 has 4 divisors (see below), whose sum is σ = 517333249454652. Its totient is φ = 344888832969760.

The previous prime is 431111041212199. The next prime is 431111041212221. The reversal of 431111041212205 is 502212140111134.

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 53760291643881 + 377350749568324 = 7332141^2 + 19425518^2 .

It is not a de Polignac number, because 431111041212205 - 2²⁵ = 431111007657773 is a prime.

It is a super-4 number, since 4×431111041212205⁴ (a number of 60 digits) contains 4444 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, 43111104121216 + ... + 43111104121225.

It is an arithmetic number, because the mean of its divisors is an integer number (129333312363663).

Almost surely, 2^{431111041212205} is an apocalyptic number.

It is an amenable number.

431111041212205 is a deficient number, since it is larger than the sum of its proper divisors (86222208242447).

431111041212205 is an equidigital number, since it uses as much as digits as its factorization.

431111041212205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86222208242446.

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 431111041212205 its reverse (502212140111134), we get a palindrome (933323181323339).

The spelling of 431111041212205 in words is "four hundred thirty-one trillion, one hundred eleven billion, forty-one million, two hundred twelve thousand, two hundred five".