231100122 has 64 divisors (see below), whose sum is σ = 516096000. Its totient is φ = 68402880.

The previous prime is 231100117. The next prime is 231100123. The reversal of 231100122 is 221001132.

It is a junction number, because it is equal to n+sod(n) for n = 231100098 and 231100107.

It is not an unprimeable number, because it can be changed into a prime (231100123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 662004 + ... + 662352.

It is an arithmetic number, because the mean of its divisors is an integer number (8064000).

Almost surely, 2^231100122 is an apocalyptic number.

231100122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 231100122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258048000).

231100122 is an abundant number, since it is smaller than the sum of its proper divisors (284995878).

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

231100122 is a wasteful number, since it uses less digits than its factorization.

231100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 231100122 is about 15201.9775687244. The cubic root of 231100122 is about 613.6678787535.

Adding to 231100122 its reverse (221001132), we get a palindrome (452101254).

The spelling of 231100122 in words is "two hundred thirty-one million, one hundred thousand, one hundred twenty-two".