212431345533 has 12 divisors (see below), whose sum is σ = 334740302208. Its totient is φ = 128746269960.

The previous prime is 212431345471. The next prime is 212431345559. The reversal of 212431345533 is 335543134212.

212431345533 is a `hidden beast` number, since 21 + 24 + 31 + 34 + 553 + 3 = 666.

It is not a de Polignac number, because 212431345533 - 2¹⁰ = 212431344509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212431345433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1072885485 + ... + 1072885682.

It is an arithmetic number, because the mean of its divisors is an integer number (27895025184).

Almost surely, 2^212431345533 is an apocalyptic number.

It is an amenable number.

212431345533 is a deficient number, since it is larger than the sum of its proper divisors (122308956675).

212431345533 is a wasteful number, since it uses less digits than its factorization.

212431345533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145771184 (or 2145771181 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

Adding to 212431345533 its reverse (335543134212), we get a palindrome (547974479745).

The spelling of 212431345533 in words is "two hundred twelve billion, four hundred thirty-one million, three hundred forty-five thousand, five hundred thirty-three".