21030111312023 has 8 divisors (see below), whose sum is σ = 22942623442320. Its totient is φ = 19117713153280.

The previous prime is 21030111311861. The next prime is 21030111312047. The reversal of 21030111312023 is 32021311103012.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21030111312023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21030111311986 and 21030111312004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030111312053) 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, 28106840 + ... + 28845357.

It is an arithmetic number, because the mean of its divisors is an integer number (2867827930290).

Almost surely, 2^{21030111312023} is an apocalyptic number.

21030111312023 is a deficient number, since it is larger than the sum of its proper divisors (1912512130297).

21030111312023 is a wasteful number, since it uses less digits than its factorization.

21030111312023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56985777.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21030111312023 its reverse (32021311103012), we get a palindrome (53051422415035).

The spelling of 21030111312023 in words is "twenty-one trillion, thirty billion, one hundred eleven million, three hundred twelve thousand, twenty-three".