31446028728572 has 12 divisors (see below), whose sum is σ = 55038363834216. Its totient is φ = 15720781918800.

The previous prime is 31446028728563. The next prime is 31446028728601. The reversal of 31446028728572 is 27582782064413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558079679 + ... + 558136022.

It is an arithmetic number, because the mean of its divisors is an integer number (4586530319518).

Almost surely, 2^{31446028728572} is an apocalyptic number.

It is an amenable number.

31446028728572 is a deficient number, since it is larger than the sum of its proper divisors (23592335105644).

31446028728572 is a wasteful number, since it uses less digits than its factorization.

31446028728572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116222748 (or 1116222746 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 59.

The spelling of 31446028728572 in words is "thirty-one trillion, four hundred forty-six billion, twenty-eight million, seven hundred twenty-eight thousand, five hundred seventy-two".