20321322113 has 8 divisors (see below), whose sum is σ = 21522714408. Its totient is φ = 19120598784.

The previous prime is 20321322107. The next prime is 20321322139. The reversal of 20321322113 is 31122312302.

It can be written as a sum of positive squares in 4 ways, for example, as 333865984 + 19987456129 = 18272^2 + 141377^2 .

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 20321322113 - 2⁸ = 20321321857 is a prime.

It is a super-2 number, since 2×20321322113² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20321322913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104006 + ... + 226847.

It is an arithmetic number, because the mean of its divisors is an integer number (2690339301).

Almost surely, 2^20321322113 is an apocalyptic number.

It is an amenable number.

20321322113 is a deficient number, since it is larger than the sum of its proper divisors (1201392295).

20321322113 is a wasteful number, since it uses less digits than its factorization.

20321322113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334483.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20321322113 its reverse (31122312302), we get a palindrome (51443634415).

The spelling of 20321322113 in words is "twenty billion, three hundred twenty-one million, three hundred twenty-two thousand, one hundred thirteen".