100531260 has 96 divisors (see below), whose sum is σ = 316673280. Its totient is φ = 26473536.

The previous prime is 100531253. The next prime is 100531271. The reversal of 100531260 is 62135001.

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 (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43699 + ... + 45941.

It is an arithmetic number, because the mean of its divisors is an integer number (3298680).

Almost surely, 2^100531260 is an apocalyptic number.

100531260 is a gapful number since it is divisible by the number (10) 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 100531260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158336640).

100531260 is an abundant number, since it is smaller than the sum of its proper divisors (216142020).

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

100531260 is a wasteful number, since it uses less digits than its factorization.

100531260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344 (or 2336 counting only the distinct ones).

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

The square root of 100531260 is about 10026.5278137549. The cubic root of 100531260 is about 464.9793955490.

Adding to 100531260 its reverse (62135001), we get a palindrome (162666261).

The spelling of 100531260 in words is "one hundred million, five hundred thirty-one thousand, two hundred sixty".