22343431212 has 18 divisors (see below), whose sum is σ = 56479228988. Its totient is φ = 7447810392.

The previous prime is 22343431181. The next prime is 22343431219. The reversal of 22343431212 is 21213434322.

22343431212 is a `hidden beast` number, since 2 + 2 + 343 + 4 + 312 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (22343431219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 310325398 + ... + 310325469.

Almost surely, 2^22343431212 is an apocalyptic number.

It is an amenable number.

22343431212 is an abundant number, since it is smaller than the sum of its proper divisors (34135797776).

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

22343431212 is a wasteful number, since it uses less digits than its factorization.

22343431212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620650877 (or 620650872 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 22343431212 its reverse (21213434322), we get a palindrome (43556865534).

It can be divided in two parts, 2234343 and 1212, that added together give a triangular number (2235555 = T₂₁₁₄).

The spelling of 22343431212 in words is "twenty-two billion, three hundred forty-three million, four hundred thirty-one thousand, two hundred twelve".