21230131110023 has 8 divisors (see below), whose sum is σ = 23907244417536. Its totient is φ = 18677534700600.

The previous prime is 21230131109987. The next prime is 21230131110047. The reversal of 21230131110023 is 32001113103212.

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 21230131110023 - 2²² = 21230126915719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21230131109977 and 21230131110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230131110053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31129224161 + ... + 31129224842.

It is an arithmetic number, because the mean of its divisors is an integer number (2988405552192).

Almost surely, 2^{21230131110023} is an apocalyptic number.

21230131110023 is a deficient number, since it is larger than the sum of its proper divisors (2677113307513).

21230131110023 is a wasteful number, since it uses less digits than its factorization.

21230131110023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62258449045.

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

Adding to 21230131110023 its reverse (32001113103212), we get a palindrome (53231244213235).

The spelling of 21230131110023 in words is "twenty-one trillion, two hundred thirty billion, one hundred thirty-one million, one hundred ten thousand, twenty-three".