231212340404 has 6 divisors (see below), whose sum is σ = 404621595714. Its totient is φ = 115606170200.

The previous prime is 231212340391. The next prime is 231212340407. The reversal of 231212340404 is 404043212132.

231212340404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 163014062500 + 68198277904 = 403750^2 + 261148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231212340407) by changing a digit.

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, 28901542547 + ... + 28901542554.

It is an arithmetic number, because the mean of its divisors is an integer number (67436932619).

Almost surely, 2^231212340404 is an apocalyptic number.

It is an amenable number.

231212340404 is a deficient number, since it is larger than the sum of its proper divisors (173409255310).

231212340404 is a wasteful number, since it uses less digits than its factorization.

231212340404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57803085105 (or 57803085103 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 231212340404 its reverse (404043212132), we get a palindrome (635255552536).

The spelling of 231212340404 in words is "two hundred thirty-one billion, two hundred twelve million, three hundred forty thousand, four hundred four".