427531 has 4 divisors (see below), whose sum is σ = 460432. Its totient is φ = 394632.

The previous prime is 427529. The next prime is 427541. The reversal of 427531 is 135724.

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 427531 - 2¹ = 427529 is a prime.

It is a super-2 number, since 2×427531² = 365565511922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427541) 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, 16431 + ... + 16456.

It is an arithmetic number, because the mean of its divisors is an integer number (115108).

2⁴²⁷⁵³¹ is an apocalyptic number.

427531 is a deficient number, since it is larger than the sum of its proper divisors (32901).

427531 is a wasteful number, since it uses less digits than its factorization.

427531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32900.

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

The square root of 427531 is about 653.8585473939. The cubic root of 427531 is about 75.3336835723. Note that the first 3 decimals are identical.

The spelling of 427531 in words is "four hundred twenty-seven thousand, five hundred thirty-one".