531436 has 6 divisors (see below), whose sum is σ = 930020. Its totient is φ = 265716.

The previous prime is 531383. The next prime is 531457. The reversal of 531436 is 634135.

531436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 3 and base 9.

It is a zygodrome in base 3.

It is an unprimeable number.

531436 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66426 + ... + 66433.

531436 is a Friedman number, since it can be written as (3+6*(3+1))^4-5, using all its digits and the basic arithmetic operations.

2⁵³¹⁴³⁶ is an apocalyptic number.

It is an amenable number.

531436 is a deficient number, since it is larger than the sum of its proper divisors (398584).

531436 is a wasteful number, since it uses less digits than its factorization.

531436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132863 (or 132861 counting only the distinct ones).

The product of its digits is 1080, while the sum is 22.

The square root of 531436 is about 728.9965706367. The cubic root of 531436 is about 80.9997459729. Note that the first 3 decimals are identical.

The spelling of 531436 in words is "five hundred thirty-one thousand, four hundred thirty-six".