2931287981916 has 48 divisors (see below), whose sum is σ = 8068921763840. Its totient is φ = 810494372160.

The previous prime is 2931287981873. The next prime is 2931287981933. The reversal of 2931287981916 is 6191897821392.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 562840711 + ... + 562845918.

Almost surely, 2^{2931287981916} is an apocalyptic number.

It is an amenable number.

2931287981916 is an abundant number, since it is smaller than the sum of its proper divisors (5137633781924).

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

2931287981916 is a wasteful number, since it uses less digits than its factorization.

2931287981916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125686674 (or 1125686672 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 66.

The spelling of 2931287981916 in words is "two trillion, nine hundred thirty-one billion, two hundred eighty-seven million, nine hundred eighty-one thousand, nine hundred sixteen".