31663866429068 has 12 divisors (see below), whose sum is σ = 55414105749072. Its totient is φ = 15831264786480.

The previous prime is 31663866429061. The next prime is 31663866429071. The reversal of 31663866429068 is 86092466836613.

It is a junction number, because it is equal to n+sod(n) for n = 31663866428989 and 31663866429007.

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, 167000423 + ... + 167189918.

It is an arithmetic number, because the mean of its divisors is an integer number (4617842145756).

Almost surely, 2^{31663866429068} is an apocalyptic number.

It is an amenable number.

31663866429068 is a deficient number, since it is larger than the sum of its proper divisors (23750239320004).

31663866429068 is a wasteful number, since it uses less digits than its factorization.

31663866429068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334214032 (or 334214030 counting only the distinct ones).

The product of its (nonzero) digits is 322486272, while the sum is 68.

The spelling of 31663866429068 in words is "thirty-one trillion, six hundred sixty-three billion, eight hundred sixty-six million, four hundred twenty-nine thousand, sixty-eight".