100313311021 has 24 divisors (see below), whose sum is σ = 127435191840. Its totient is φ = 78082754400.

The previous prime is 100313311019. The next prime is 100313311067. The reversal of 100313311021 is 120113313001.

It is not a de Polignac number, because 100313311021 - 2¹ = 100313311019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100313310986 and 100313311004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100313311321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 408310 + ... + 606088.

It is an arithmetic number, because the mean of its divisors is an integer number (5309799660).

Almost surely, 2^100313311021 is an apocalyptic number.

100313311021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100313311021 is a deficient number, since it is larger than the sum of its proper divisors (27121880819).

100313311021 is a wasteful number, since it uses less digits than its factorization.

100313311021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198745 (or 198738 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 100313311021 its reverse (120113313001), we get a palindrome (220426624022).

The spelling of 100313311021 in words is "one hundred billion, three hundred thirteen million, three hundred eleven thousand, twenty-one".