100311331121 has 4 divisors (see below), whose sum is σ = 103547180544. Its totient is φ = 97075481700.

The previous prime is 100311331091. The next prime is 100311331207. The reversal of 100311331121 is 121133113001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100311331121 - 2²⁶ = 100244222257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100311331121.

It is not an unprimeable number, because it can be changed into a prime (100311331621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1617924665 + ... + 1617924726.

It is an arithmetic number, because the mean of its divisors is an integer number (25886795136).

Almost surely, 2^100311331121 is an apocalyptic number.

It is an amenable number.

100311331121 is a deficient number, since it is larger than the sum of its proper divisors (3235849423).

100311331121 is an equidigital number, since it uses as much as digits as its factorization.

100311331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3235849422.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 100311331121 its reverse (121133113001), we get a palindrome (221444444122).

The spelling of 100311331121 in words is "one hundred billion, three hundred eleven million, three hundred thirty-one thousand, one hundred twenty-one".