2731078065 has 16 divisors (see below), whose sum is σ = 4422374208. Its totient is φ = 1439025216.

The previous prime is 2731078061. The next prime is 2731078079. The reversal of 2731078065 is 5608701372.

It is not a de Polignac number, because 2731078065 - 2² = 2731078061 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2731078061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1095574 + ... + 1098063.

It is an arithmetic number, because the mean of its divisors is an integer number (276398388).

Almost surely, 2^2731078065 is an apocalyptic number.

It is an amenable number.

2731078065 is a deficient number, since it is larger than the sum of its proper divisors (1691296143).

2731078065 is a wasteful number, since it uses less digits than its factorization.

2731078065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193728.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 2731078065 is about 52259.7174217389. The cubic root of 2731078065 is about 1397.7989333242.

The spelling of 2731078065 in words is "two billion, seven hundred thirty-one million, seventy-eight thousand, sixty-five".