31066446021 has 16 divisors (see below), whose sum is σ = 44611465920. Its totient is φ = 19116426240.

The previous prime is 31066445909. The next prime is 31066446029. The reversal of 31066446021 is 12064466013.

It is not a de Polignac number, because 31066446021 - 2¹¹ = 31066443973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31066446029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 868590 + ... + 903648.

It is an arithmetic number, because the mean of its divisors is an integer number (2788216620).

Almost surely, 2^31066446021 is an apocalyptic number.

It is an amenable number.

31066446021 is a deficient number, since it is larger than the sum of its proper divisors (13545019899).

31066446021 is a wasteful number, since it uses less digits than its factorization.

31066446021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57796.

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 31066446021 in words is "thirty-one billion, sixty-six million, four hundred forty-six thousand, twenty-one".