531136 has 28 divisors (see below), whose sum is σ = 1084072. Its totient is φ = 258048.

The previous prime is 531133. The next prime is 531143. The reversal of 531136 is 631135.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (531133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2656 + ... + 2848.

2⁵³¹¹³⁶ 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 531136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542036).

531136 is an abundant number, since it is smaller than the sum of its proper divisors (552936).

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

531136 is a wasteful number, since it uses less digits than its factorization.

531136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 238 counting only the distinct ones).

The product of its digits is 270, while the sum is 19.

The square root of 531136 is about 728.7907793050. The cubic root of 531136 is about 80.9845014293.

Subtracting 531136 from its reverse (631135), we obtain a palindrome (99999).

The spelling of 531136 in words is "five hundred thirty-one thousand, one hundred thirty-six".