100310312021 has 4 divisors (see below), whose sum is σ = 100760134272. Its totient is φ = 99860489772.

The previous prime is 100310311993. The next prime is 100310312077. The reversal of 100310312021 is 120213013001.

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 100310312021 - 2¹⁴ = 100310295637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100310311987 and 100310312005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100310312621) 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, 224910791 + ... + 224911236.

It is an arithmetic number, because the mean of its divisors is an integer number (25190033568).

Almost surely, 2^100310312021 is an apocalyptic number.

It is an amenable number.

100310312021 is a deficient number, since it is larger than the sum of its proper divisors (449822251).

100310312021 is an equidigital number, since it uses as much as digits as its factorization.

100310312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449822250.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 100310312021 its reverse (120213013001), we get a palindrome (220523325022).

The spelling of 100310312021 in words is "one hundred billion, three hundred ten million, three hundred twelve thousand, twenty-one".