21303330202031 has 8 divisors (see below), whose sum is σ = 21322219576320. Its totient is φ = 21284446963768.

The previous prime is 21303330201997. The next prime is 21303330202061. The reversal of 21303330202031 is 13020203330312.

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 21303330202031 - 2¹⁰ = 21303330201007 is a prime.

It is a super-2 number, since 2×21303330202031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21303330201988 and 21303330202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303330202061) 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, 5426750 + ... + 8488596.

It is an arithmetic number, because the mean of its divisors is an integer number (2665277447040).

Almost surely, 2^{21303330202031} is an apocalyptic number.

21303330202031 is a deficient number, since it is larger than the sum of its proper divisors (18889374289).

21303330202031 is a wasteful number, since it uses less digits than its factorization.

21303330202031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3068013.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21303330202031 its reverse (13020203330312), we get a palindrome (34323533532343).

The spelling of 21303330202031 in words is "twenty-one trillion, three hundred three billion, three hundred thirty million, two hundred two thousand, thirty-one".