231552214212 has 48 divisors (see below), whose sum is σ = 590920948800. Its totient is φ = 69986943360.

The previous prime is 231552214121. The next prime is 231552214247. The reversal of 231552214212 is 212412255132.

231552214212 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 231552214212.

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 in 15 ways as a sum of consecutive naturals, for example, 2203387 + ... + 2306082.

It is an arithmetic number, because the mean of its divisors is an integer number (12310853100).

Almost surely, 2^231552214212 is an apocalyptic number.

231552214212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231552214212 is an abundant number, since it is smaller than the sum of its proper divisors (359368734588).

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

231552214212 is a wasteful number, since it uses less digits than its factorization.

231552214212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4509876 (or 4509874 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

Adding to 231552214212 its reverse (212412255132), we get a palindrome (443964469344).

The spelling of 231552214212 in words is "two hundred thirty-one billion, five hundred fifty-two million, two hundred fourteen thousand, two hundred twelve".