31318066 has 12 divisors (see below), whose sum is σ = 50869242. Its totient is φ = 14454336.

The previous prime is 31318051. The next prime is 31318069. The reversal of 31318066 is 66081313.

It can be written as a sum of positive squares in 3 ways, for example, as 20566225 + 10751841 = 4535^2 + 3279^2 .

It is not an unprimeable number, because it can be changed into a prime (31318069) 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 5 ways as a sum of consecutive naturals, for example, 45991 + ... + 46666.

Almost surely, 2^31318066 is an apocalyptic number.

31318066 is a deficient number, since it is larger than the sum of its proper divisors (19551176).

31318066 is a wasteful number, since it uses less digits than its factorization.

31318066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92685 (or 92672 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 31318066 is about 5596.2546403823. The cubic root of 31318066 is about 315.2087840685.

Adding to 31318066 its reverse (66081313), we get a palindrome (97399379).

The spelling of 31318066 in words is "thirty-one million, three hundred eighteen thousand, sixty-six".