20311120003 has 4 divisors (see below), whose sum is σ = 20311477480. Its totient is φ = 20310762528.

The previous prime is 20311120001. The next prime is 20311120007. The reversal of 20311120003 is 30002111302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20311120003 - 2¹ = 20311120001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20311120001) 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, 72438 + ... + 214171.

It is an arithmetic number, because the mean of its divisors is an integer number (5077869370).

Almost surely, 2^20311120003 is an apocalyptic number.

20311120003 is a deficient number, since it is larger than the sum of its proper divisors (357477).

20311120003 is an equidigital number, since it uses as much as digits as its factorization.

20311120003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357476.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20311120003 its reverse (30002111302), we get a palindrome (50313231305).

The spelling of 20311120003 in words is "twenty billion, three hundred eleven million, one hundred twenty thousand, three".