31106071 has 8 divisors (see below), whose sum is σ = 32432400. Its totient is φ = 29807232.

The previous prime is 31106041. The next prime is 31106099. The reversal of 31106071 is 17060113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31106071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31106041) 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 7 ways as a sum of consecutive naturals, for example, 4546 + ... + 9103.

It is an arithmetic number, because the mean of its divisors is an integer number (4054050).

Almost surely, 2^31106071 is an apocalyptic number.

31106071 is a deficient number, since it is larger than the sum of its proper divisors (1326329).

31106071 is a wasteful number, since it uses less digits than its factorization.

31106071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13745.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 31106071 is about 5577.2816855526. The cubic root of 31106071 is about 314.4959470311.

Adding to 31106071 its reverse (17060113), we get a palindrome (48166184).

The spelling of 31106071 in words is "thirty-one million, one hundred six thousand, seventy-one".