531030100 has 36 divisors (see below), whose sum is σ = 1166939200. Its totient is φ = 209720160.

The previous prime is 531030079. The next prime is 531030113. The reversal of 531030100 is 1030135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25710 + ... + 41509.

Almost surely, 2^531030100 is an apocalyptic number.

531030100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

531030100 is an abundant number, since it is smaller than the sum of its proper divisors (635909100).

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

531030100 is a wasteful number, since it uses less digits than its factorization.

531030100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67312 (or 67305 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 13.

The square root of 531030100 is about 23044.0903487206. The cubic root of 531030100 is about 809.7911873467.

Adding to 531030100 its reverse (1030135), we get a palindrome (532060235).

The spelling of 531030100 in words is "five hundred thirty-one million, thirty thousand, one hundred".