21320031322031 has 8 divisors (see below), whose sum is σ = 22982788982160. Its totient is φ = 19660524412032.

The previous prime is 21320031322021. The next prime is 21320031322043. The reversal of 21320031322031 is 13022313002312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21320031322031 is a prime.

It is a super-2 number, since 2×21320031322031² (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 = 21320031321988 and 21320031322006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320031322021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 812673905 + ... + 812700138.

It is an arithmetic number, because the mean of its divisors is an integer number (2872848622770).

Almost surely, 2^{21320031322031} is an apocalyptic number.

21320031322031 is a deficient number, since it is larger than the sum of its proper divisors (1662757660129).

21320031322031 is a wasteful number, since it uses less digits than its factorization.

21320031322031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625375065.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21320031322031 its reverse (13022313002312), we get a palindrome (34342344324343).

The spelling of 21320031322031 in words is "twenty-one trillion, three hundred twenty billion, thirty-one million, three hundred twenty-two thousand, thirty-one".