100311443405 has 4 divisors (see below), whose sum is σ = 120373732092. Its totient is φ = 80249154720.

The previous prime is 100311443389. The next prime is 100311443423. The reversal of 100311443405 is 504344113001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72989667556 + 27321775849 = 270166^2 + 165293^2 .

It is not a de Polignac number, because 100311443405 - 2⁴ = 100311443389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10031144336 + ... + 10031144345.

It is an arithmetic number, because the mean of its divisors is an integer number (30093433023).

Almost surely, 2^100311443405 is an apocalyptic number.

It is an amenable number.

100311443405 is a deficient number, since it is larger than the sum of its proper divisors (20062288687).

100311443405 is an equidigital number, since it uses as much as digits as its factorization.

100311443405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20062288686.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 100311443405 its reverse (504344113001), we get a palindrome (604655556406).

The spelling of 100311443405 in words is "one hundred billion, three hundred eleven million, four hundred forty-three thousand, four hundred five".