531315 has 12 divisors (see below), whose sum is σ = 921024. Its totient is φ = 283344.

The previous prime is 531299. The next prime is 531331. The reversal of 531315 is 513135.

It is a happy number.

531315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (531299) and next prime (531331).

It is not a de Polignac number, because 531315 - 2⁴ = 531299 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 3, base 9 and base 15.

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5859 + ... + 5948.

It is an arithmetic number, because the mean of its divisors is an integer number (76752).

2⁵³¹³¹⁵ is an apocalyptic number.

531315 is a deficient number, since it is larger than the sum of its proper divisors (389709).

531315 is a wasteful number, since it uses less digits than its factorization.

531315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11818 (or 11815 counting only the distinct ones).

The product of its digits is 225, while the sum is 18.

The square root of 531315 is about 728.9135751240. The cubic root of 531315 is about 80.9935980308.

The spelling of 531315 in words is "five hundred thirty-one thousand, three hundred fifteen".