20311117367 has 2 divisors, whose sum is σ = 20311117368. Its totient is φ = 20311117366.

The previous prime is 20311117339. The next prime is 20311117369. The reversal of 20311117367 is 76371111302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20311117367 - 2⁶ = 20311117303 is a prime.

It is a super-4 number, since 4×20311117367⁴ (a number of 42 digits) contains 4444 as substring.

Together with 20311117369, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20311117369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155558683 + 10155558684.

It is an arithmetic number, because the mean of its divisors is an integer number (10155558684).

Almost surely, 2^20311117367 is an apocalyptic number.

20311117367 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311117367 is an equidigital number, since it uses as much as digits as its factorization.

20311117367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 32.

Adding to 20311117367 its reverse (76371111302), we get a palindrome (96682228669).

The spelling of 20311117367 in words is "twenty billion, three hundred eleven million, one hundred seventeen thousand, three hundred sixty-seven".