531243521204 has 144 divisors (see below), whose sum is σ = 1049660344320. Its totient is φ = 235030118400.

The previous prime is 531243521203. The next prime is 531243521233. The reversal of 531243521204 is 402125342135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531243521203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 828772724 + ... + 828773364.

Almost surely, 2^531243521204 is an apocalyptic number.

It is an amenable number.

531243521204 is a deficient number, since it is larger than the sum of its proper divisors (518416823116).

531243521204 is a wasteful number, since it uses less digits than its factorization.

531243521204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 1017 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 531243521204 its reverse (402125342135), we get a palindrome (933368863339).

The spelling of 531243521204 in words is "five hundred thirty-one billion, two hundred forty-three million, five hundred twenty-one thousand, two hundred four".