531427 has 4 divisors (see below), whose sum is σ = 572320. Its totient is φ = 490536.

The previous prime is 531383. The next prime is 531457. The reversal of 531427 is 724135.

531427 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 cyclic number.

It is not a de Polignac number, because 531427 - 2⁷ = 531299 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 3, base 9 and base 14.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 531398 and 531407.

It is not an unprimeable number, because it can be changed into a prime (531457) 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, 20427 + ... + 20452.

It is an arithmetic number, because the mean of its divisors is an integer number (143080).

531427 is a Friedman number, since it can be written as 27^4-5*3+1, using all its digits and the basic arithmetic operations.

2⁵³¹⁴²⁷ is an apocalyptic number.

531427 is a deficient number, since it is larger than the sum of its proper divisors (40893).

531427 is a wasteful number, since it uses less digits than its factorization.

531427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40892.

The product of its digits is 840, while the sum is 22.

The square root of 531427 is about 728.9903977420. The cubic root of 531427 is about 80.9992887201. Note that the first 3 decimals are identical.

The spelling of 531427 in words is "five hundred thirty-one thousand, four hundred twenty-seven".