20331330313 has 4 divisors (see below), whose sum is σ = 23235806080. Its totient is φ = 17426854548.

The previous prime is 20331330307. The next prime is 20331330347. The reversal of 20331330313 is 31303313302.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31303313302 = 2 ⋅15651656651.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20331330313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331330113) 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, 1452237873 + ... + 1452237886.

It is an arithmetic number, because the mean of its divisors is an integer number (5808951520).

Almost surely, 2^20331330313 is an apocalyptic number.

It is an amenable number.

20331330313 is a deficient number, since it is larger than the sum of its proper divisors (2904475767).

20331330313 is an equidigital number, since it uses as much as digits as its factorization.

20331330313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904475766.

The product of its (nonzero) digits is 1458, while the sum is 22.

Adding to 20331330313 its reverse (31303313302), we get a palindrome (51634643615).

The spelling of 20331330313 in words is "twenty billion, three hundred thirty-one million, three hundred thirty thousand, three hundred thirteen".