231045100 has 144 divisors (see below), whose sum is σ = 598461696. Its totient is φ = 76320000.

The previous prime is 231045083. The next prime is 231045103. The reversal of 231045100 is 1540132.

It is not an unprimeable number, because it can be changed into a prime (231045103) 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, 1530025 + ... + 1530175.

It is an arithmetic number, because the mean of its divisors is an integer number (4155984).

Almost surely, 2^231045100 is an apocalyptic number.

231045100 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 231045100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299230848).

231045100 is an abundant number, since it is smaller than the sum of its proper divisors (367416596).

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

231045100 is a wasteful number, since it uses less digits than its factorization.

231045100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 231045100 is about 15200.1677622321. The cubic root of 231045100 is about 613.6191727154.

Adding to 231045100 its reverse (1540132), we get a palindrome (232585232).

The spelling of 231045100 in words is "two hundred thirty-one million, forty-five thousand, one hundred".