531189020 has 48 divisors (see below), whose sum is σ = 1148494368. Its totient is φ = 206219520.

The previous prime is 531189017. The next prime is 531189049. The reversal of 531189020 is 20981135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453035 + ... + 454205.

It is an arithmetic number, because the mean of its divisors is an integer number (23926966).

Almost surely, 2^531189020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531189020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (574247184).

531189020 is an abundant number, since it is smaller than the sum of its proper divisors (617305348).

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

531189020 is a wasteful number, since it uses less digits than its factorization.

531189020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 531189020 is about 23047.5382633374. The cubic root of 531189020 is about 809.8719606587.

The spelling of 531189020 in words is "five hundred thirty-one million, one hundred eighty-nine thousand, twenty".