31485772006 has 16 divisors (see below), whose sum is σ = 50994445824. Its totient is φ = 14493947904.

The previous prime is 31485772001. The next prime is 31485772013. The reversal of 31485772006 is 60027758413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31485772001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1570971 + ... + 1590886.

It is an arithmetic number, because the mean of its divisors is an integer number (3187152864).

Almost surely, 2^31485772006 is an apocalyptic number.

31485772006 is a deficient number, since it is larger than the sum of its proper divisors (19508673818).

31485772006 is a wasteful number, since it uses less digits than its factorization.

31485772006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3162255.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 31485772006 in words is "thirty-one billion, four hundred eighty-five million, seven hundred seventy-two thousand, six".