231131102111200 has 72 divisors (see below), whose sum is σ = 564316825599072. Its totient is φ = 92441295313920.

The previous prime is 231131102111191. The next prime is 231131102111201. The reversal of 231131102111200 is 2111201131132.

It is a super-2 number, since 2×231131102111200² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231131102111201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10773144 + ... + 24048343.

It is an arithmetic number, because the mean of its divisors is an integer number (7837733688876).

Almost surely, 2^{231131102111200} is an apocalyptic number.

231131102111200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231131102111200 is an abundant number, since it is smaller than the sum of its proper divisors (333185723487872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231131102111200 is a wasteful number, since it uses less digits than its factorization.

231131102111200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34829804 (or 34829791 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 231131102111200 its reverse (2111201131132), we get a palindrome (233242303242332).

The spelling of 231131102111200 in words is "two hundred thirty-one trillion, one hundred thirty-one billion, one hundred two million, one hundred eleven thousand, two hundred".