20311113201 has 4 divisors (see below), whose sum is σ = 27081484272. Its totient is φ = 13540742132.

The previous prime is 20311113197. The next prime is 20311113241. The reversal of 20311113201 is 10231111302.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 20311113201 - 2² = 20311113197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20311113241) 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, 3385185531 + ... + 3385185536.

It is an arithmetic number, because the mean of its divisors is an integer number (6770371068).

Almost surely, 2^20311113201 is an apocalyptic number.

It is an amenable number.

20311113201 is a deficient number, since it is larger than the sum of its proper divisors (6770371071).

20311113201 is an equidigital number, since it uses as much as digits as its factorization.

20311113201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770371070.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20311113201 its reverse (10231111302), we get a palindrome (30542224503).

The spelling of 20311113201 in words is "twenty billion, three hundred eleven million, one hundred thirteen thousand, two hundred one".