2101723343 has 4 divisors (see below), whose sum is σ = 2122128528. Its totient is φ = 2081318160.

The previous prime is 2101723339. The next prime is 2101723367. The reversal of 2101723343 is 3433271012.

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

It is a cyclic number.

It is not a de Polignac number, because 2101723343 - 2² = 2101723339 is a prime.

It is a super-2 number, since 2×2101723343² = 8834482021022191298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101723643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10202438 + ... + 10202643.

It is an arithmetic number, because the mean of its divisors is an integer number (530532132).

Almost surely, 2^2101723343 is an apocalyptic number.

2101723343 is a deficient number, since it is larger than the sum of its proper divisors (20405185).

2101723343 is a wasteful number, since it uses less digits than its factorization.

2101723343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20405184.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 2101723343 is about 45844.5563071560. The cubic root of 2101723343 is about 1280.9293671671.

Adding to 2101723343 its reverse (3433271012), we get a palindrome (5534994355).

The spelling of 2101723343 in words is "two billion, one hundred one million, seven hundred twenty-three thousand, three hundred forty-three".