231233231220212 has 24 divisors (see below), whose sum is σ = 435799971256776. Its totient is φ = 106719536014848.

The previous prime is 231233231220197. The next prime is 231233231220217. The reversal of 231233231220212 is 212022132332132.

It can be written as a sum of positive squares in 4 ways, for example, as 37910791666276 + 193322439553936 = 6157174^2 + 13904044^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231233231220217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71183033 + ... + 74360544.

It is an arithmetic number, because the mean of its divisors is an integer number (18158332135699).

Almost surely, 2^{231233231220212} is an apocalyptic number.

It is an amenable number.

231233231220212 is a deficient number, since it is larger than the sum of its proper divisors (204566740036564).

231233231220212 is a wasteful number, since it uses less digits than its factorization.

231233231220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145574147 (or 145574145 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 231233231220212 its reverse (212022132332132), we get a palindrome (443255363552344).

The spelling of 231233231220212 in words is "two hundred thirty-one trillion, two hundred thirty-three billion, two hundred thirty-one million, two hundred twenty thousand, two hundred twelve".