231002213212 has 6 divisors (see below), whose sum is σ = 404253873128. Its totient is φ = 115501106604.

The previous prime is 231002213179. The next prime is 231002213251. The reversal of 231002213212 is 212312200132.

231002213212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231002213212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28875276648 + ... + 28875276655.

Almost surely, 2^231002213212 is an apocalyptic number.

It is an amenable number.

231002213212 is a deficient number, since it is larger than the sum of its proper divisors (173251659916).

231002213212 is a wasteful number, since it uses less digits than its factorization.

231002213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57750553307 (or 57750553305 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 231002213212 its reverse (212312200132), we get a palindrome (443314413344).

The spelling of 231002213212 in words is "two hundred thirty-one billion, two million, two hundred thirteen thousand, two hundred twelve".