31471 has 4 divisors (see below), whose sum is σ = 34344. Its totient is φ = 28600.

The previous prime is 31469. The next prime is 31477. The reversal of 31471 is 17413.

31471 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17413 = 11 ⋅1583.

It is not a de Polignac number, because 31471 - 2¹ = 31469 is a prime.

It is a super-3 number, since 3×31471³ = 93508886100333, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31477) 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, 1420 + ... + 1441.

It is an arithmetic number, because the mean of its divisors is an integer number (8586).

2³¹⁴⁷¹ is an apocalyptic number.

31471 is a deficient number, since it is larger than the sum of its proper divisors (2873).

31471 is a wasteful number, since it uses less digits than its factorization.

31471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872.

The product of its digits is 84, while the sum is 16.

The square root of 31471 is about 177.4006764361. The cubic root of 31471 is about 31.5721032439.

Adding to 31471 its reverse (17413), we get a palindrome (48884).

The spelling of 31471 in words is "thirty-one thousand, four hundred seventy-one".