531117 has 20 divisors (see below), whose sum is σ = 813120. Its totient is φ = 345384.

The previous prime is 531103. The next prime is 531121. The reversal of 531117 is 711135.

It is a happy number.

It is not a de Polignac number, because 531117 - 2⁴ = 531101 is a prime.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 531117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531197) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6358 + ... + 6440.

It is an arithmetic number, because the mean of its divisors is an integer number (40656).

2⁵³¹¹¹⁷ is an apocalyptic number.

It is an amenable number.

531117 is a deficient number, since it is larger than the sum of its proper divisors (282003).

531117 is an equidigital number, since it uses as much as digits as its factorization.

531117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 165 counting only the distinct ones).

The product of its digits is 105, while the sum is 18.

The square root of 531117 is about 728.7777438973. Note that the first 4 decimals coincide. The cubic root of 531117 is about 80.9835357483.

Adding to 531117 its sum of digits (18), we get a palindrome (531135).

The spelling of 531117 in words is "five hundred thirty-one thousand, one hundred seventeen".