531406 has 4 divisors (see below), whose sum is σ = 797112. Its totient is φ = 265702.

The previous prime is 531383. The next prime is 531457. The reversal of 531406 is 604135.

531406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132850 + ... + 132853.

It is an arithmetic number, because the mean of its divisors is an integer number (199278).

2⁵³¹⁴⁰⁶ is an apocalyptic number.

531406 is a deficient number, since it is larger than the sum of its proper divisors (265706).

531406 is a wasteful number, since it uses less digits than its factorization.

531406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265705.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 531406 is about 728.9759941178. The cubic root of 531406 is about 80.9982217767.

The spelling of 531406 in words is "five hundred thirty-one thousand, four hundred six".