100311240 has 32 divisors (see below), whose sum is σ = 300934080. Its totient is φ = 26749632.

The previous prime is 100311229. The next prime is 100311247. The reversal of 100311240 is 42113001.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (100311247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417844 + ... + 418083.

It is an arithmetic number, because the mean of its divisors is an integer number (9404190).

Almost surely, 2^100311240 is an apocalyptic number.

100311240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100311240 is an abundant number, since it is smaller than the sum of its proper divisors (200622840).

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

100311240 is a wasteful number, since it uses less digits than its factorization.

100311240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835941 (or 835937 counting only the distinct ones).

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

The square root of 100311240 is about 10015.5499100149. The cubic root of 100311240 is about 464.6399340014.

Adding to 100311240 its reverse (42113001), we get a palindrome (142424241).

The spelling of 100311240 in words is "one hundred million, three hundred eleven thousand, two hundred forty".