31486671 has 16 divisors (see below), whose sum is σ = 46961920. Its totient is φ = 20849400.

The previous prime is 31486661. The next prime is 31486709. The reversal of 31486671 is 17668413.

It is not a de Polignac number, because 31486671 - 2⁵ = 31486639 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31486661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216 + ... + 7938.

It is an arithmetic number, because the mean of its divisors is an integer number (2935120).

Almost surely, 2^31486671 is an apocalyptic number.

31486671 is a deficient number, since it is larger than the sum of its proper divisors (15475249).

31486671 is a wasteful number, since it uses less digits than its factorization.

31486671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7883 (or 7877 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 31486671 is about 5611.2985128221. The cubic root of 31486671 is about 315.7734282242.

The spelling of 31486671 in words is "thirty-one million, four hundred eighty-six thousand, six hundred seventy-one".