31663866429067 has 4 divisors (see below), whose sum is σ = 31664146339936. Its totient is φ = 31663586518200.

The previous prime is 31663866429061. The next prime is 31663866429071. The reversal of 31663866429067 is 76092466836613.

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

It is a cyclic number.

It is not a de Polignac number, because 31663866429067 - 2⁷ = 31663866428939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31663866428993 and 31663866429011.

It is not an unprimeable number, because it can be changed into a prime (31663866429061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139785684 + ... + 140012017.

It is an arithmetic number, because the mean of its divisors is an integer number (7916036584984).

Almost surely, 2^{31663866429067} is an apocalyptic number.

31663866429067 is a deficient number, since it is larger than the sum of its proper divisors (279910869).

31663866429067 is a wasteful number, since it uses less digits than its factorization.

31663866429067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279910868.

The product of its (nonzero) digits is 282175488, while the sum is 67.

The spelling of 31663866429067 in words is "thirty-one trillion, six hundred sixty-three billion, eight hundred sixty-six million, four hundred twenty-nine thousand, sixty-seven".