212031230004 has 72 divisors (see below), whose sum is σ = 585453348480. Its totient is φ = 64168243200.

The previous prime is 212031229997. The next prime is 212031230041. The reversal of 212031230004 is 400032130212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 43612 + ... + 652659.

Almost surely, 2^212031230004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212031230004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292726674240).

212031230004 is an abundant number, since it is smaller than the sum of its proper divisors (373422118476).

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

212031230004 is a wasteful number, since it uses less digits than its factorization.

212031230004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697061 (or 697056 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 212031230004 its reverse (400032130212), we get a palindrome (612063360216).

The spelling of 212031230004 in words is "two hundred twelve billion, thirty-one million, two hundred thirty thousand, four".