20111320313 has 8 divisors (see below), whose sum is σ = 23983686528. Its totient is φ = 16488784224.

The previous prime is 20111320309. The next prime is 20111320319. The reversal of 20111320313 is 31302311102.

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 20111320313 - 2² = 20111320309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20111320291 and 20111320300.

It is not an unprimeable number, because it can be changed into a prime (20111320319) 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, 62457356 + ... + 62457677.

It is an arithmetic number, because the mean of its divisors is an integer number (2997960816).

Almost surely, 2^20111320313 is an apocalyptic number.

20111320313 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20111320313 is a deficient number, since it is larger than the sum of its proper divisors (3872366215).

20111320313 is a wasteful number, since it uses less digits than its factorization.

20111320313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124915063.

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

Adding to 20111320313 its reverse (31302311102), we get a palindrome (51413631415).

The spelling of 20111320313 in words is "twenty billion, one hundred eleven million, three hundred twenty thousand, three hundred thirteen".