20211312000311 has 4 divisors (see below), whose sum is σ = 20467151392800. Its totient is φ = 19955472607824.

The previous prime is 20211312000307. The next prime is 20211312000323. The reversal of 20211312000311 is 11300021311202.

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 20211312000311 - 2² = 20211312000307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20211312000311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211312000361) 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, 127919696126 + ... + 127919696283.

It is an arithmetic number, because the mean of its divisors is an integer number (5116787848200).

Almost surely, 2^{20211312000311} is an apocalyptic number.

20211312000311 is a deficient number, since it is larger than the sum of its proper divisors (255839392489).

20211312000311 is an equidigital number, since it uses as much as digits as its factorization.

20211312000311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255839392488.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20211312000311 its reverse (11300021311202), we get a palindrome (31511333311513).

The spelling of 20211312000311 in words is "twenty trillion, two hundred eleven billion, three hundred twelve million, three hundred eleven", and thus it is an aban number.