431445055212211 has 4 divisors (see below), whose sum is σ = 431479267028424. Its totient is φ = 431410843396000.

The previous prime is 431445055212173. The next prime is 431445055212233. The reversal of 431445055212211 is 112212550544134.

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 431445055212211 - 2⁹ = 431445055211699 is a prime.

It is a super-2 number, since 2×431445055212211² (a number of 30 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431445055212811) 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, 17105889190 + ... + 17105914411.

It is an arithmetic number, because the mean of its divisors is an integer number (107869816757106).

Almost surely, 2^{431445055212211} is an apocalyptic number.

431445055212211 is a deficient number, since it is larger than the sum of its proper divisors (34211816213).

431445055212211 is a wasteful number, since it uses less digits than its factorization.

431445055212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34211816212.

The product of its (nonzero) digits is 192000, while the sum is 40.

The spelling of 431445055212211 in words is "four hundred thirty-one trillion, four hundred forty-five billion, fifty-five million, two hundred twelve thousand, two hundred eleven".