199343723 has 4 divisors (see below), whose sum is σ = 199392408. Its totient is φ = 199295040.

The previous prime is 199343699. The next prime is 199343731. The reversal of 199343723 is 327343991.

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 199343723 - 2⁶ = 199343659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199343773) 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, 17573 + ... + 26598.

It is an arithmetic number, because the mean of its divisors is an integer number (49848102).

Almost surely, 2^199343723 is an apocalyptic number.

199343723 is a deficient number, since it is larger than the sum of its proper divisors (48685).

199343723 is an equidigital number, since it uses as much as digits as its factorization.

199343723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48684.

The product of its digits is 122472, while the sum is 41.

The square root of 199343723 is about 14118.9136621767. The cubic root of 199343723 is about 584.1631915163.

The spelling of 199343723 in words is "one hundred ninety-nine million, three hundred forty-three thousand, seven hundred twenty-three".