231730544221604 has 24 divisors (see below), whose sum is σ = 428658130723200. Its totient is φ = 109307823317280.

The previous prime is 231730544221573. The next prime is 231730544221619. The reversal of 231730544221604 is 406122445037132.

It is a happy number.

231730544221604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6378823067 + ... + 6378859394.

It is an arithmetic number, because the mean of its divisors is an integer number (17860755446800).

Almost surely, 2^{231730544221604} is an apocalyptic number.

It is an amenable number.

231730544221604 is a deficient number, since it is larger than the sum of its proper divisors (196927586501596).

231730544221604 is a wasteful number, since it uses less digits than its factorization.

231730544221604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12757682723 (or 12757682721 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 44.

Adding to 231730544221604 its reverse (406122445037132), we get a palindrome (637852989258736).

The spelling of 231730544221604 in words is "two hundred thirty-one trillion, seven hundred thirty billion, five hundred forty-four million, two hundred twenty-one thousand, six hundred four".