100561230 has 192 divisors, whose sum is σ = 340796160. Its totient is φ = 20865600.

The previous prime is 100561229. The next prime is 100561271. The reversal of 100561230 is 32165001.

100561230 is a `hidden beast` number, since 100 + 561 + 2 + 3 + 0 = 666.

It is a super-2 number, since 2×100561230² = 20225121958225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 145185 + ... + 145875.

It is an arithmetic number, because the mean of its divisors is an integer number (1774980).

Almost surely, 2^100561230 is an apocalyptic number.

100561230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 100561230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170398080).

100561230 is an abundant number, since it is smaller than the sum of its proper divisors (240234930).

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

100561230 is a wasteful number, since it uses less digits than its factorization.

100561230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 100561230 is about 10028.0222377097. The cubic root of 100561230 is about 465.0255969260.

The spelling of 100561230 in words is "one hundred million, five hundred sixty-one thousand, two hundred thirty".