2102731706 has 8 divisors (see below), whose sum is σ = 3154953684. Its totient is φ = 1051080480.

The previous prime is 2102731693. The next prime is 2102731721. The reversal of 2102731706 is 6071372012.

It can be written as a sum of positive squares in 2 ways, for example, as 2025450025 + 77281681 = 45005^2 + 8791^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133355 + ... + 148286.

Almost surely, 2^2102731706 is an apocalyptic number.

2102731706 is a deficient number, since it is larger than the sum of its proper divisors (1052221978).

2102731706 is a wasteful number, since it uses less digits than its factorization.

2102731706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285376.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 2102731706 is about 45855.5526190668. The cubic root of 2102731706 is about 1281.1341888073.

The spelling of 2102731706 in words is "two billion, one hundred two million, seven hundred thirty-one thousand, seven hundred six".