21310100323 has 8 divisors (see below), whose sum is σ = 22241611296. Its totient is φ = 20379004800.

The previous prime is 21310100293. The next prime is 21310100381. The reversal of 21310100323 is 32300101312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21310100323 - 2⁵ = 21310100291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21310100297 and 21310100306.

It is not an unprimeable number, because it can be changed into a prime (21310100923) 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 7 ways as a sum of consecutive naturals, for example, 3333 + ... + 206473.

It is an arithmetic number, because the mean of its divisors is an integer number (2780201412).

Almost surely, 2^21310100323 is an apocalyptic number.

21310100323 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21310100323 is a deficient number, since it is larger than the sum of its proper divisors (931510973).

21310100323 is a wasteful number, since it uses less digits than its factorization.

21310100323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207725.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21310100323 its reverse (32300101312), we get a palindrome (53610201635).

The spelling of 21310100323 in words is "twenty-one billion, three hundred ten million, one hundred thousand, three hundred twenty-three".