100311121013 has 4 divisors (see below), whose sum is σ = 100830867948. Its totient is φ = 99791374080.

The previous prime is 100311120997. The next prime is 100311121021. The reversal of 100311121013 is 310121113001.

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 69244238449 + 31066882564 = 263143^2 + 176258^2 .

It is a cyclic number.

It is not a de Polignac number, because 100311121013 - 2⁴ = 100311120997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100311121063) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 259873178 + ... + 259873563.

It is an arithmetic number, because the mean of its divisors is an integer number (25207716987).

Almost surely, 2^100311121013 is an apocalyptic number.

It is an amenable number.

100311121013 is a deficient number, since it is larger than the sum of its proper divisors (519746935).

100311121013 is an equidigital number, since it uses as much as digits as its factorization.

100311121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519746934.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 100311121013 its reverse (310121113001), we get a palindrome (410432234014).

It can be divided in two parts, 100 and 311121013, that added together give a palindrome (311121113).

The spelling of 100311121013 in words is "one hundred billion, three hundred eleven million, one hundred twenty-one thousand, thirteen".