31069966 has 4 divisors (see below), whose sum is σ = 46604952. Its totient is φ = 15534982.

The previous prime is 31069957. The next prime is 31069979. The reversal of 31069966 is 66996013.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7767490 + ... + 7767493.

It is an arithmetic number, because the mean of its divisors is an integer number (11651238).

Almost surely, 2^31069966 is an apocalyptic number.

31069966 is a deficient number, since it is larger than the sum of its proper divisors (15534986).

31069966 is a wasteful number, since it uses less digits than its factorization.

31069966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15534985.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 31069966 is about 5574.0439538992. The cubic root of 31069966 is about 314.3742208229.

The spelling of 31069966 in words is "thirty-one million, sixty-nine thousand, nine hundred sixty-six".