231554020544212 has 24 divisors (see below), whose sum is σ = 408316745944800. Its totient is φ = 114892835832096.

The previous prime is 231554020544179. The next prime is 231554020544219. The reversal of 231554020544212 is 212445020455132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231554020544219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91589287 + ... + 94083502.

It is an arithmetic number, because the mean of its divisors is an integer number (17013197747700).

Almost surely, 2^{231554020544212} is an apocalyptic number.

It is an amenable number.

231554020544212 is a deficient number, since it is larger than the sum of its proper divisors (176762725400588).

231554020544212 is a wasteful number, since it uses less digits than its factorization.

231554020544212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185675175 (or 185675173 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

Adding to 231554020544212 its reverse (212445020455132), we get a palindrome (443999040999344).

The spelling of 231554020544212 in words is "two hundred thirty-one trillion, five hundred fifty-four billion, twenty million, five hundred forty-four thousand, two hundred twelve".