199900101031 has 16 divisors (see below), whose sum is σ = 211751769600. Its totient is φ = 188182255968.

The previous prime is 199900100989. The next prime is 199900101047. The reversal of 199900101031 is 130101009991.

It is a cyclic number.

It is not a de Polignac number, because 199900101031 - 2¹³ = 199900092839 is a prime.

It is a super-2 number, since 2×199900101031² (a number of 23 digits) 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 (199970101031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11487085 + ... + 11504473.

It is an arithmetic number, because the mean of its divisors is an integer number (13234485600).

Almost surely, 2^199900101031 is an apocalyptic number.

199900101031 is a deficient number, since it is larger than the sum of its proper divisors (11851668569).

199900101031 is a wasteful number, since it uses less digits than its factorization.

199900101031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21198.

The product of its (nonzero) digits is 2187, while the sum is 34.

The spelling of 199900101031 in words is "one hundred ninety-nine billion, nine hundred million, one hundred one thousand, thirty-one".