531236 has 12 divisors (see below), whose sum is σ = 945840. Its totient is φ = 261000.

The previous prime is 531229. The next prime is 531239. The reversal of 531236 is 632135.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (531239) by changing a digit.

531236 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 890 + ... + 1361.

It is an arithmetic number, because the mean of its divisors is an integer number (78820).

2⁵³¹²³⁶ is an apocalyptic number.

It is an amenable number.

531236 is a deficient number, since it is larger than the sum of its proper divisors (414604).

531236 is a wasteful number, since it uses less digits than its factorization.

531236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314 (or 2312 counting only the distinct ones).

The product of its digits is 540, while the sum is 20.

The square root of 531236 is about 728.8593828716. The cubic root of 531236 is about 80.9895835815.

It can be divided in two parts, 531 and 236, that multiplied together give a square (125316 = 354²).

The spelling of 531236 in words is "five hundred thirty-one thousand, two hundred thirty-six".