231122100 has 108 divisors (see below), whose sum is σ = 735147392. Its totient is φ = 56020800.

The previous prime is 231122071. The next prime is 231122113. The reversal of 231122100 is 1221132.

231122100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33117 + ... + 39483.

Almost surely, 2^231122100 is an apocalyptic number.

231122100 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 231122100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367573696).

231122100 is an abundant number, since it is smaller than the sum of its proper divisors (504025292).

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

231122100 is a wasteful number, since it uses less digits than its factorization.

231122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6406 (or 6388 counting only the distinct ones).

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

The square root of 231122100 is about 15202.7004180178. The cubic root of 231122100 is about 613.6873317436.

Adding to 231122100 its reverse (1221132), we get a palindrome (232343232).

The spelling of 231122100 in words is "two hundred thirty-one million, one hundred twenty-two thousand, one hundred".