531340 has 24 divisors (see below), whose sum is σ = 1153152. Its totient is φ = 205440.

The previous prime is 531337. The next prime is 531343. The reversal of 531340 is 43135.

531340 is nontrivially palindromic in base 15.

It is an interprime number because it is at equal distance from previous prime (531337) and next prime (531343).

It is not an unprimeable number, because it can be changed into a prime (531343) 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, 192 + ... + 1048.

It is an arithmetic number, because the mean of its divisors is an integer number (48048).

2⁵³¹³⁴⁰ 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 531340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (576576).

531340 is an abundant number, since it is smaller than the sum of its proper divisors (621812).

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

531340 is a wasteful number, since it uses less digits than its factorization.

531340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 531340 is about 728.9307237317. The cubic root of 531340 is about 80.9948683433.

Adding to 531340 its reverse (43135), we get a palindrome (574475).

The spelling of 531340 in words is "five hundred thirty-one thousand, three hundred forty".