20312011313 has 8 divisors (see below), whose sum is σ = 23324797920. Its totient is φ = 17493598080.

The previous prime is 20312011309. The next prime is 20312011327. The reversal of 20312011313 is 31311021302.

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 20312011313 - 2² = 20312011309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20312011291 and 20312011300.

It is not an unprimeable number, because it can be changed into a prime (20312011303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48593120 + ... + 48593537.

It is an arithmetic number, because the mean of its divisors is an integer number (2915599740).

Almost surely, 2^20312011313 is an apocalyptic number.

It is an amenable number.

20312011313 is a deficient number, since it is larger than the sum of its proper divisors (3012786607).

20312011313 is a wasteful number, since it uses less digits than its factorization.

20312011313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97186687.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20312011313 its reverse (31311021302), we get a palindrome (51623032615).

The spelling of 20312011313 in words is "twenty billion, three hundred twelve million, eleven thousand, three hundred thirteen".