20311011220003 has 16 divisors (see below), whose sum is σ = 23533828664320. Its totient is φ = 17168571038016.

The previous prime is 20311011219979. The next prime is 20311011220033. The reversal of 20311011220003 is 30002211011302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20311011220003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20311011220033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 935926 + ... + 6441892.

It is an arithmetic number, because the mean of its divisors is an integer number (1470864291520).

Almost surely, 2^{20311011220003} is an apocalyptic number.

20311011220003 is a deficient number, since it is larger than the sum of its proper divisors (3222817444317).

20311011220003 is an equidigital number, since it uses as much as digits as its factorization.

20311011220003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5513266.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20311011220003 its reverse (30002211011302), we get a palindrome (50313222231305).

The spelling of 20311011220003 in words is "twenty trillion, three hundred eleven billion, eleven million, two hundred twenty thousand, three".