2688704131 has 2 divisors, whose sum is σ = 2688704132. Its totient is φ = 2688704130.

The previous prime is 2688704089. The next prime is 2688704141. The reversal of 2688704131 is 1314078862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2688704131 - 2¹³ = 2688695939 is a prime.

It is a super-2 number, since 2×2688704131² = 14458259808112930322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2688704141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344352065 + 1344352066.

It is an arithmetic number, because the mean of its divisors is an integer number (1344352066).

Almost surely, 2^2688704131 is an apocalyptic number.

2688704131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2688704131 is an equidigital number, since it uses as much as digits as its factorization.

2688704131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 2688704131 is about 51852.7157533721. The cubic root of 2688704131 is about 1390.5320549998.

The spelling of 2688704131 in words is "two billion, six hundred eighty-eight million, seven hundred four thousand, one hundred thirty-one".