423404233212 has 12 divisors (see below), whose sum is σ = 987943210856. Its totient is φ = 141134744400.

The previous prime is 423404233193. The next prime is 423404233223. The reversal of 423404233212 is 212332404324.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×423404233212² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 423404233212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17641843039 + ... + 17641843062.

Almost surely, 2^423404233212 is an apocalyptic number.

It is an amenable number.

423404233212 is an abundant number, since it is smaller than the sum of its proper divisors (564538977644).

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

423404233212 is a wasteful number, since it uses less digits than its factorization.

423404233212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35283686108 (or 35283686106 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 423404233212 its reverse (212332404324), we get a palindrome (635736637536).

The spelling of 423404233212 in words is "four hundred twenty-three billion, four hundred four million, two hundred thirty-three thousand, two hundred twelve".