998723011 has 32 divisors (see below), whose sum is σ = 1243872000. Its totient is φ = 788330880.

The previous prime is 998723009. The next prime is 998723017. The reversal of 998723011 is 110327899.

It is a cyclic number.

It is not a de Polignac number, because 998723011 - 2¹ = 998723009 is a prime.

It is a super-2 number, since 2×998723011² = 1994895305401812242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998723017) 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, 403600 + ... + 406066.

It is an arithmetic number, because the mean of its divisors is an integer number (38871000).

Almost surely, 2^998723011 is an apocalyptic number.

998723011 is a deficient number, since it is larger than the sum of its proper divisors (245148989).

998723011 is a wasteful number, since it uses less digits than its factorization.

998723011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 998723011 is about 31602.5791827186. The cubic root of 998723011 is about 999.5741556824.

The spelling of 998723011 in words is "nine hundred ninety-eight million, seven hundred twenty-three thousand, eleven".