212131034344 has 8 divisors (see below), whose sum is σ = 397745689410. Its totient is φ = 106065517168.

The previous prime is 212131034341. The next prime is 212131034359. The reversal of 212131034344 is 443430131212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 194338142244 + 17792892100 = 440838^2 + 133390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (212131034341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13258189639 + ... + 13258189654.

Almost surely, 2^212131034344 is an apocalyptic number.

It is an amenable number.

212131034344 is a deficient number, since it is larger than the sum of its proper divisors (185614655066).

212131034344 is a wasteful number, since it uses less digits than its factorization.

212131034344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26516379299 (or 26516379295 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 212131034344 its reverse (443430131212), we get a palindrome (655561165556).

The spelling of 212131034344 in words is "two hundred twelve billion, one hundred thirty-one million, thirty-four thousand, three hundred forty-four".