20100220311 has 16 divisors (see below), whose sum is σ = 26903635200. Its totient is φ = 13348577088.

The previous prime is 20100220297. The next prime is 20100220333. The reversal of 20100220311 is 11302200102.

It is not a de Polignac number, because 20100220311 - 2⁵ = 20100220279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100220411) 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, 819220 + ... + 843398.

It is an arithmetic number, because the mean of its divisors is an integer number (1681477200).

Almost surely, 2^20100220311 is an apocalyptic number.

20100220311 is a deficient number, since it is larger than the sum of its proper divisors (6803414889).

20100220311 is a wasteful number, since it uses less digits than its factorization.

20100220311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25238.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20100220311 its reverse (11302200102), we get a palindrome (31402420413).

The spelling of 20100220311 in words is "twenty billion, one hundred million, two hundred twenty thousand, three hundred eleven".