471531 has 4 divisors (see below), whose sum is σ = 628712. Its totient is φ = 314352.

The previous prime is 471521. The next prime is 471533. The reversal of 471531 is 135174.

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

It is not a de Polignac number, because 471531 - 2⁶ = 471467 is a prime.

It is a super-2 number, since 2×471531² = 444682967922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 471498 and 471507.

It is not an unprimeable number, because it can be changed into a prime (471533) 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, 78586 + ... + 78591.

It is an arithmetic number, because the mean of its divisors is an integer number (157178).

2⁴⁷¹⁵³¹ is an apocalyptic number.

471531 is a deficient number, since it is larger than the sum of its proper divisors (157181).

471531 is a wasteful number, since it uses less digits than its factorization.

471531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157180.

The product of its digits is 420, while the sum is 21.

The square root of 471531 is about 686.6811487146. The cubic root of 471531 is about 77.8341314193.

The spelling of 471531 in words is "four hundred seventy-one thousand, five hundred thirty-one".