21311310102023 has 8 divisors (see below), whose sum is σ = 21672601252560. Its totient is φ = 20950021701760.

The previous prime is 21311310101989. The next prime is 21311310102101. The reversal of 21311310102023 is 32020101311312.

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 not a de Polignac number, because 21311310102023 - 2²⁸ = 21311041666567 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21311310101986 and 21311310102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21311310104023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20352911 + ... + 21374367.

It is an arithmetic number, because the mean of its divisors is an integer number (2709075156570).

Almost surely, 2^{21311310102023} is an apocalyptic number.

21311310102023 is a deficient number, since it is larger than the sum of its proper divisors (361291150537).

21311310102023 is a wasteful number, since it uses less digits than its factorization.

21311310102023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375137.

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

Adding to 21311310102023 its reverse (32020101311312), we get a palindrome (53331411413335).

The spelling of 21311310102023 in words is "twenty-one trillion, three hundred eleven billion, three hundred ten million, one hundred two thousand, twenty-three".