2731069328957 has 4 divisors (see below), whose sum is σ = 2731073512380. Its totient is φ = 2731065145536.

The previous prime is 2731069328921. The next prime is 2731069328959. The reversal of 2731069328957 is 7598239601372.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1329376716196 + 1401692612761 = 1152986^2 + 1183931^2 .

It is a cyclic number.

It is not a de Polignac number, because 2731069328957 - 2³⁰ = 2729995587133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2731069328957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2731069328959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877532 + ... + 2496437.

It is an arithmetic number, because the mean of its divisors is an integer number (682768378095).

Almost surely, 2^{2731069328957} is an apocalyptic number.

It is an amenable number.

2731069328957 is a deficient number, since it is larger than the sum of its proper divisors (4183423).

2731069328957 is an equidigital number, since it uses as much as digits as its factorization.

2731069328957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183422.

The product of its (nonzero) digits is 34292160, while the sum is 62.

The spelling of 2731069328957 in words is "two trillion, seven hundred thirty-one billion, sixty-nine million, three hundred twenty-eight thousand, nine hundred fifty-seven".