20331321113 has 4 divisors (see below), whose sum is σ = 20345257680. Its totient is φ = 20317384548.

The previous prime is 20331321107. The next prime is 20331321119. The reversal of 20331321113 is 31112313302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20331321107) and next prime (20331321119).

It is a cyclic number.

It is not a de Polignac number, because 20331321113 - 2⁴ = 20331321097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331321119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6966095 + ... + 6969012.

It is an arithmetic number, because the mean of its divisors is an integer number (5086314420).

Almost surely, 2^20331321113 is an apocalyptic number.

It is an amenable number.

20331321113 is a deficient number, since it is larger than the sum of its proper divisors (13936567).

20331321113 is a wasteful number, since it uses less digits than its factorization.

20331321113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13936566.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 20331321113 its reverse (31112313302), we get a palindrome (51443634415).

The spelling of 20331321113 in words is "twenty billion, three hundred thirty-one million, three hundred twenty-one thousand, one hundred thirteen".