21011310013031 has 8 divisors (see below), whose sum is σ = 22771689247104. Its totient is φ = 19271520010080.

The previous prime is 21011310013013. The next prime is 21011310013033. The reversal of 21011310013031 is 13031001311012.

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

It is a de Polignac number, because none of the positive numbers 2^k-21011310013031 is a prime.

It is a super-2 number, since 2×21011310013031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011310013033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5147305655 + ... + 5147309736.

It is an arithmetic number, because the mean of its divisors is an integer number (2846461155888).

Almost surely, 2^{21011310013031} is an apocalyptic number.

21011310013031 is a deficient number, since it is larger than the sum of its proper divisors (1760379234073).

21011310013031 is a wasteful number, since it uses less digits than its factorization.

21011310013031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10294615561.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 21011310013031 its reverse (13031001311012), we get a palindrome (34042311324043).

The spelling of 21011310013031 in words is "twenty-one trillion, eleven billion, three hundred ten million, thirteen thousand, thirty-one".