31946064628 has 24 divisors (see below), whose sum is σ = 57439202184. Its totient is φ = 15537177600.

The previous prime is 31946064589. The next prime is 31946064671. The reversal of 31946064628 is 82646064913.

It can be written as a sum of positive squares in 4 ways, for example, as 702674064 + 31243390564 = 26508^2 + 176758^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233743 + ... + 344278.

It is an arithmetic number, because the mean of its divisors is an integer number (2393300091).

Almost surely, 2^31946064628 is an apocalyptic number.

It is an amenable number.

31946064628 is a deficient number, since it is larger than the sum of its proper divisors (25493137556).

31946064628 is a wasteful number, since it uses less digits than its factorization.

31946064628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578403 (or 578401 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 31946064628 in words is "thirty-one billion, nine hundred forty-six million, sixty-four thousand, six hundred twenty-eight".