231504144544404 has 36 divisors (see below), whose sum is σ = 594784327655700. Its totient is φ = 75902998210560.

The previous prime is 231504144544391. The next prime is 231504144544433. The reversal of 231504144544404 is 404445441405132.

231504144544404 is a `hidden beast` number, since 2 + 3 + 1 + 50 + 4 + 14 + 4 + 544 + 40 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 69114947331600 + 162389197212804 = 8313540^2 + 12743202^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 231504144544404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52710413229 + ... + 52710417620.

It is an arithmetic number, because the mean of its divisors is an integer number (16521786879325).

Almost surely, 2^{231504144544404} is an apocalyptic number.

It is an amenable number.

231504144544404 is an abundant number, since it is smaller than the sum of its proper divisors (363280183111296).

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

231504144544404 is a wasteful number, since it uses less digits than its factorization.

231504144544404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105420830920 (or 105420830915 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 45.

Adding to 231504144544404 its reverse (404445441405132), we get a palindrome (635949585949536).

The spelling of 231504144544404 in words is "two hundred thirty-one trillion, five hundred four billion, one hundred forty-four million, five hundred forty-four thousand, four hundred four".