31106072 has 16 divisors (see below), whose sum is σ = 58428240. Its totient is φ = 15525216.

The previous prime is 31106041. The next prime is 31106099. The reversal of 31106072 is 27060113.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1733 + ... + 8075.

It is an arithmetic number, because the mean of its divisors is an integer number (3651765).

Almost surely, 2^31106072 is an apocalyptic number.

It is an amenable number.

31106072 is a deficient number, since it is larger than the sum of its proper divisors (27322168).

31106072 is a wasteful number, since it uses less digits than its factorization.

31106072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6962 (or 6958 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 31106072 is about 5577.2817752020. The cubic root of 31106072 is about 314.4959504013.

Adding to 31106072 its reverse (27060113), we get a palindrome (58166185).

The spelling of 31106072 in words is "thirty-one million, one hundred six thousand, seventy-two".