23031010021 has 8 divisors (see below), whose sum is σ = 23272833024. Its totient is φ = 22789276800.

The previous prime is 23031010019. The next prime is 23031010031. The reversal of 23031010021 is 12001013032.

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 23031010021 - 2¹ = 23031010019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23031009983 and 23031010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031010031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576546 + ... + 615196.

It is an arithmetic number, because the mean of its divisors is an integer number (2909104128).

Almost surely, 2^23031010021 is an apocalyptic number.

It is an amenable number.

23031010021 is a deficient number, since it is larger than the sum of its proper divisors (241823003).

23031010021 is an equidigital number, since it uses as much as digits as its factorization.

23031010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44891.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 23031010021 its reverse (12001013032), we get a palindrome (35032023053).

The spelling of 23031010021 in words is "twenty-three billion, thirty-one million, ten thousand, twenty-one".