199012723 has 32 divisors (see below), whose sum is σ = 252241920. Its totient is φ = 152841600.

The previous prime is 199012717. The next prime is 199012741. The reversal of 199012723 is 327210991.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 199012723 - 2⁹ = 199012211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199012753) 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 31 ways as a sum of consecutive naturals, for example, 542086 + ... + 542452.

It is an arithmetic number, because the mean of its divisors is an integer number (7882560).

Almost surely, 2^199012723 is an apocalyptic number.

199012723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

199012723 is a deficient number, since it is larger than the sum of its proper divisors (53229197).

199012723 is a wasteful number, since it uses less digits than its factorization.

199012723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 199012723 is about 14107.1869272368. The cubic root of 199012723 is about 583.8396880843.

The spelling of 199012723 in words is "one hundred ninety-nine million, twelve thousand, seven hundred twenty-three".