2731284647 has 32 divisors (see below), whose sum is σ = 3447628800. Its totient is φ = 2150033760.

The previous prime is 2731284623. The next prime is 2731284653. The reversal of 2731284647 is 7464821372.

It is not a de Polignac number, because 2731284647 - 2²⁰ = 2730236071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2731284598 and 2731284607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2731284697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 939398 + ... + 942300.

It is an arithmetic number, because the mean of its divisors is an integer number (107738400).

Almost surely, 2^2731284647 is an apocalyptic number.

2731284647 is a deficient number, since it is larger than the sum of its proper divisors (716344153).

2731284647 is a wasteful number, since it uses less digits than its factorization.

2731284647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3148 (or 3134 counting only the distinct ones).

The product of its digits is 451584, while the sum is 44.

The square root of 2731284647 is about 52261.6938780212. The cubic root of 2731284647 is about 1397.8341761614.

The spelling of 2731284647 in words is "two billion, seven hundred thirty-one million, two hundred eighty-four thousand, six hundred forty-seven".