212435504342231 has 4 divisors (see below), whose sum is σ = 212479116645264. Its totient is φ = 212391892039200.

The previous prime is 212435504342221. The next prime is 212435504342251. The reversal of 212435504342231 is 132243405534212.

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 212435504342231 - 2¹⁸ = 212435504080087 is a prime.

It is a super-4 number, since 4×212435504342231⁴ (a number of 58 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212435504342221) 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, 21806144210 + ... + 21806153951.

It is an arithmetic number, because the mean of its divisors is an integer number (53119779161316).

Almost surely, 2^{212435504342231} is an apocalyptic number.

212435504342231 is a deficient number, since it is larger than the sum of its proper divisors (43612303033).

212435504342231 is an equidigital number, since it uses as much as digits as its factorization.

212435504342231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43612303032.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 212435504342231 its reverse (132243405534212), we get a palindrome (344678909876443).

The spelling of 212435504342231 in words is "two hundred twelve trillion, four hundred thirty-five billion, five hundred four million, three hundred forty-two thousand, two hundred thirty-one".