2102939723 has 2 divisors, whose sum is σ = 2102939724. Its totient is φ = 2102939722.

The previous prime is 2102939711. The next prime is 2102939759. The reversal of 2102939723 is 3279392012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102939723 - 2²⁰ = 2101891147 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102930723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051469861 + 1051469862.

It is an arithmetic number, because the mean of its divisors is an integer number (1051469862).

Almost surely, 2^2102939723 is an apocalyptic number.

2102939723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102939723 is an equidigital number, since it uses as much as digits as its factorization.

2102939723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 2102939723 is about 45857.8207397604. The cubic root of 2102939723 is about 1281.1764336805.

The spelling of 2102939723 in words is "two billion, one hundred two million, nine hundred thirty-nine thousand, seven hundred twenty-three".