531386 has 8 divisors (see below), whose sum is σ = 844020. Its totient is φ = 250048.

The previous prime is 531383. The next prime is 531457. The reversal of 531386 is 683135.

531386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 398161 + 133225 = 631^2 + 365^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (531383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7781 + ... + 7848.

2⁵³¹³⁸⁶ is an apocalyptic number.

531386 is a deficient number, since it is larger than the sum of its proper divisors (312634).

531386 is a wasteful number, since it uses less digits than its factorization.

531386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15648.

The product of its digits is 2160, while the sum is 26.

The square root of 531386 is about 728.9622761158. The cubic root of 531386 is about 80.9972056141.

The spelling of 531386 in words is "five hundred thirty-one thousand, three hundred eighty-six".