23031203021021 has 8 divisors (see below), whose sum is σ = 24803293318944. Its totient is φ = 21259178336880.

The previous prime is 23031203021003. The next prime is 23031203021033. The reversal of 23031203021021 is 12012030213032.

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 23031203021021 - 2⁶ = 23031203020957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23031203020984 and 23031203021002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031203021621) 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, 15673211 + ... + 17079576.

It is an arithmetic number, because the mean of its divisors is an integer number (3100411664868).

Almost surely, 2^{23031203021021} is an apocalyptic number.

It is an amenable number.

23031203021021 is a deficient number, since it is larger than the sum of its proper divisors (1772090297923).

23031203021021 is a wasteful number, since it uses less digits than its factorization.

23031203021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32806891.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23031203021021 its reverse (12012030213032), we get a palindrome (35043233234053).

The spelling of 23031203021021 in words is "twenty-three trillion, thirty-one billion, two hundred three million, twenty-one thousand, twenty-one".