531334144 has 88 divisors (see below), whose sum is σ = 1186735968. Its totient is φ = 235683840.

The previous prime is 531334127. The next prime is 531334147. The reversal of 531334144 is 441433135.

It is a tau number, because it is divible by the number of its divisors (88).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531334147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483804 + ... + 484900.

It is an arithmetic number, because the mean of its divisors is an integer number (13485636).

Almost surely, 2^531334144 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 531334144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (593367984).

531334144 is an abundant number, since it is smaller than the sum of its proper divisors (655401824).

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

531334144 is a wasteful number, since it uses less digits than its factorization.

531334144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171 (or 1153 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 531334144 is about 23050.6864106039. The cubic root of 531334144 is about 809.9457078887.

Adding to 531334144 its reverse (441433135), we get a palindrome (972767279).

The spelling of 531334144 in words is "five hundred thirty-one million, three hundred thirty-four thousand, one hundred forty-four".