531126204 has 48 divisors (see below), whose sum is σ = 1417559808. Its totient is φ = 151619328.

The previous prime is 531126203. The next prime is 531126227. The reversal of 531126204 is 402621135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531126203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138132 + ... + 141924.

It is an arithmetic number, because the mean of its divisors is an integer number (29532496).

Almost surely, 2^531126204 is an apocalyptic number.

It is an amenable number.

531126204 is an abundant number, since it is smaller than the sum of its proper divisors (886433604).

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

531126204 is a wasteful number, since it uses less digits than its factorization.

531126204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5474 (or 5472 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 531126204 is about 23046.1754744686. The cubic root of 531126204 is about 809.8400354741.

Adding to 531126204 its reverse (402621135), we get a palindrome (933747339).

The spelling of 531126204 in words is "five hundred thirty-one million, one hundred twenty-six thousand, two hundred four".