31428728743016 has 32 divisors (see below), whose sum is σ = 64286251361280. Its totient is φ = 14285737948800.

The previous prime is 31428728742991. The next prime is 31428728743033. The reversal of 31428728743016 is 61034782782413.

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, 50326361 + ... + 50947031.

It is an arithmetic number, because the mean of its divisors is an integer number (2008945355040).

Almost surely, 2^{31428728743016} is an apocalyptic number.

It is an amenable number.

31428728743016 is an abundant number, since it is smaller than the sum of its proper divisors (32857522618264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31428728743016 is a wasteful number, since it uses less digits than its factorization.

31428728743016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196105 (or 1196101 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 56.

The spelling of 31428728743016 in words is "thirty-one trillion, four hundred twenty-eight billion, seven hundred twenty-eight million, seven hundred forty-three thousand, sixteen".