111990200231 has 16 divisors (see below), whose sum is σ = 137844908544. Its totient is φ = 88600677984.

The previous prime is 111990200227. The next prime is 111990200261. The reversal of 111990200231 is 132002099111.

It is not a de Polignac number, because 111990200231 - 2² = 111990200227 is a prime.

It is a super-2 number, since 2×111990200231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111990200194 and 111990200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111990200221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1334006 + ... + 1415468.

It is an arithmetic number, because the mean of its divisors is an integer number (8615306784).

Almost surely, 2^111990200231 is an apocalyptic number.

111990200231 is a deficient number, since it is larger than the sum of its proper divisors (25854708313).

111990200231 is a wasteful number, since it uses less digits than its factorization.

111990200231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96590.

The product of its (nonzero) digits is 972, while the sum is 29.

Adding to 111990200231 its reverse (132002099111), we get a palindrome (243992299342).

The spelling of 111990200231 in words is "one hundred eleven billion, nine hundred ninety million, two hundred thousand, two hundred thirty-one".