20213123000311 has 2 divisors, whose sum is σ = 20213123000312. Its totient is φ = 20213123000310.

The previous prime is 20213123000209. The next prime is 20213123000333. The reversal of 20213123000311 is 11300032131202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20213123000311 - 2¹⁷ = 20213122869239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20213123000351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106561500155 + 10106561500156.

It is an arithmetic number, because the mean of its divisors is an integer number (10106561500156).

Almost surely, 2^{20213123000311} is an apocalyptic number.

20213123000311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213123000311 is an equidigital number, since it uses as much as digits as its factorization.

20213123000311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20213123000311 its reverse (11300032131202), we get a palindrome (31513155131513).

The spelling of 20213123000311 in words is "twenty trillion, two hundred thirteen billion, one hundred twenty-three million, three hundred eleven", and thus it is an aban number.