31472271 has 12 divisors (see below), whose sum is σ = 46083648. Its totient is φ = 20693664.

The previous prime is 31472261. The next prime is 31472291. The reversal of 31472271 is 17227413.

It is a happy number.

It is not a de Polignac number, because 31472271 - 2⁵ = 31472239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31472201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23295 + ... + 24608.

It is an arithmetic number, because the mean of its divisors is an integer number (3840304).

Almost surely, 2^31472271 is an apocalyptic number.

31472271 is a deficient number, since it is larger than the sum of its proper divisors (14611377).

31472271 is a wasteful number, since it uses less digits than its factorization.

31472271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47982 (or 47979 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 31472271 is about 5610.0152406210. The cubic root of 31472271 is about 315.7252826588.

Adding to 31472271 its reverse (17227413), we get a palindrome (48699684).

The spelling of 31472271 in words is "thirty-one million, four hundred seventy-two thousand, two hundred seventy-one".