21000310201031 has 8 divisors (see below), whose sum is σ = 24088916711424. Its totient is φ = 17933844239640.

The previous prime is 21000310201021. The next prime is 21000310201069. The reversal of 21000310201031 is 13010201300012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21000310201031 - 2¹⁰ = 21000310200007 is a prime.

It is a super-2 number, since 2×21000310201031² (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 = 21000310200997 and 21000310201015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000310201021) 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, 5535135215 + ... + 5535139008.

It is an arithmetic number, because the mean of its divisors is an integer number (3011114588928).

Almost surely, 2^{21000310201031} is an apocalyptic number.

21000310201031 is a deficient number, since it is larger than the sum of its proper divisors (3088606510393).

21000310201031 is a wasteful number, since it uses less digits than its factorization.

21000310201031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11070274501.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21000310201031 its reverse (13010201300012), we get a palindrome (34010511501043).

The spelling of 21000310201031 in words is "twenty-one trillion, three hundred ten million, two hundred one thousand, thirty-one".