11200198031 has 4 divisors (see below), whose sum is σ = 12218397864. Its totient is φ = 10181998200.

The previous prime is 11200198027. The next prime is 11200198057. The reversal of 11200198031 is 13089100211.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11200198031 - 2² = 11200198027 is a prime.

It is a super-2 number, since 2×11200198031² (a number of 21 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 (11200198531) 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, 509099900 + ... + 509099921.

It is an arithmetic number, because the mean of its divisors is an integer number (3054599466).

Almost surely, 2^11200198031 is an apocalyptic number.

11200198031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11200198031 is a deficient number, since it is larger than the sum of its proper divisors (1018199833).

11200198031 is a wasteful number, since it uses less digits than its factorization.

11200198031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018199832.

The product of its (nonzero) digits is 432, while the sum is 26.

Adding to 11200198031 its reverse (13089100211), we get a palindrome (24289298242).

The spelling of 11200198031 in words is "eleven billion, two hundred million, one hundred ninety-eight thousand, thirty-one".