531430243100 has 72 divisors (see below), whose sum is σ = 1167629464848. Its totient is φ = 209922508800.

The previous prime is 531430243049. The next prime is 531430243117. The reversal of 531430243100 is 1342034135.

It is a super-2 number, since 2×531430243100² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 531430243100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4412279 + ... + 4531121.

Almost surely, 2^531430243100 is an apocalyptic number.

531430243100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531430243100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (583814732424).

531430243100 is an abundant number, since it is smaller than the sum of its proper divisors (636199221748).

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

531430243100 is a wasteful number, since it uses less digits than its factorization.

531430243100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119415 (or 119408 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 531430243100 its reverse (1342034135), we get a palindrome (532772277235).

The spelling of 531430243100 in words is "five hundred thirty-one billion, four hundred thirty million, two hundred forty-three thousand, one hundred".