31864066 has 8 divisors (see below), whose sum is σ = 51472764. Its totient is φ = 14706480.

The previous prime is 31864057. The next prime is 31864087. The reversal of 31864066 is 66046813.

It can be written as a sum of positive squares in 2 ways, for example, as 28143025 + 3721041 = 5305^2 + 1929^2 .

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

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, 612745 + ... + 612796.

Almost surely, 2^31864066 is an apocalyptic number.

31864066 is a deficient number, since it is larger than the sum of its proper divisors (19608698).

31864066 is a wasteful number, since it uses less digits than its factorization.

31864066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225556.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 31864066 is about 5644.8264809470. The cubic root of 31864066 is about 317.0300269765.

The spelling of 31864066 in words is "thirty-one million, eight hundred sixty-four thousand, sixty-six".