31496671 has 2 divisors, whose sum is σ = 31496672. Its totient is φ = 31496670.

The previous prime is 31496669. The next prime is 31496677. The reversal of 31496671 is 17669413.

It is a weak prime.

It is an emirp because it is prime and its reverse (17669413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31496671 - 2¹ = 31496669 is a prime.

Together with 31496669, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31496671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31496677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15748335 + 15748336.

It is an arithmetic number, because the mean of its divisors is an integer number (15748336).

Almost surely, 2^31496671 is an apocalyptic number.

31496671 is a deficient number, since it is larger than the sum of its proper divisors (1).

31496671 is an equidigital number, since it uses as much as digits as its factorization.

31496671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 31496671 is about 5612.1895014335. The cubic root of 31496671 is about 315.8068540088.

The spelling of 31496671 in words is "thirty-one million, four hundred ninety-six thousand, six hundred seventy-one".