21323113031013 has 16 divisors (see below), whose sum is σ = 29433478100736. Its totient is φ = 13722364776960.

The previous prime is 21323113030979. The next prime is 21323113031041. The reversal of 21323113031013 is 31013031132312.

It is not a de Polignac number, because 21323113031013 - 2¹⁰ = 21323113029989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323113031083) 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 15 ways as a sum of consecutive naturals, for example, 1035796228 + ... + 1035816813.

It is an arithmetic number, because the mean of its divisors is an integer number (1839592381296).

Almost surely, 2^{21323113031013} is an apocalyptic number.

It is an amenable number.

21323113031013 is a deficient number, since it is larger than the sum of its proper divisors (8110365069723).

21323113031013 is a wasteful number, since it uses less digits than its factorization.

21323113031013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071613164.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 21323113031013 its reverse (31013031132312), we get a palindrome (52336144163325).

The spelling of 21323113031013 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred thirteen million, thirty-one thousand, thirteen".