212431264146 has 32 divisors (see below), whose sum is σ = 472236448320. Its totient is φ = 70785375552.

The previous prime is 212431264139. The next prime is 212431264147. The reversal of 212431264146 is 641462134212.

212431264146 is a `hidden beast` number, since 2 + 1 + 2 + 4 + 3 + 1 + 2 + 641 + 4 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 212431264146.

It is not an unprimeable number, because it can be changed into a prime (212431264147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541320 + ... + 847283.

It is an arithmetic number, because the mean of its divisors is an integer number (14757389010).

Almost surely, 2^212431264146 is an apocalyptic number.

212431264146 is an abundant number, since it is smaller than the sum of its proper divisors (259805184174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212431264146 is a wasteful number, since it uses less digits than its factorization.

212431264146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391447 (or 1391441 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

Adding to 212431264146 its reverse (641462134212), we get a palindrome (853893398358).

The spelling of 212431264146 in words is "two hundred twelve billion, four hundred thirty-one million, two hundred sixty-four thousand, one hundred forty-six".