231131241100 has 144 divisors (see below), whose sum is σ = 522897594912. Its totient is φ = 88602992640.

The previous prime is 231131241083. The next prime is 231131241109. The reversal of 231131241100 is 1142131132.

It is a super-2 number, since 2×231131241100² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231131241109) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81468882 + ... + 81471718.

It is an arithmetic number, because the mean of its divisors is an integer number (3631233298).

Almost surely, 2^231131241100 is an apocalyptic number.

231131241100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231131241100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261448797456).

231131241100 is an abundant number, since it is smaller than the sum of its proper divisors (291766353812).

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

231131241100 is a wasteful number, since it uses less digits than its factorization.

231131241100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212 (or 3205 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 231131241100 its reverse (1142131132), we get a palindrome (232273372232).

The spelling of 231131241100 in words is "two hundred thirty-one billion, one hundred thirty-one million, two hundred forty-one thousand, one hundred".