531235020 has 24 divisors (see below), whose sum is σ = 1487458224. Its totient is φ = 141662656.

The previous prime is 531235013. The next prime is 531235039. The reversal of 531235020 is 20532135.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4426899 + ... + 4427018.

It is an arithmetic number, because the mean of its divisors is an integer number (61977426).

Almost surely, 2^531235020 is an apocalyptic number.

It is an amenable number.

531235020 is an abundant number, since it is smaller than the sum of its proper divisors (956223204).

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

531235020 is a wasteful number, since it uses less digits than its factorization.

531235020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8853929 (or 8853927 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 531235020 is about 23048.5361791156. The cubic root of 531235020 is about 809.8953377953.

Adding to 531235020 its reverse (20532135), we get a palindrome (551767155).

The spelling of 531235020 in words is "five hundred thirty-one million, two hundred thirty-five thousand, twenty".