21311310022311 has 16 divisors (see below), whose sum is σ = 28758681542880. Its totient is φ = 14036009602560.

The previous prime is 21311310022267. The next prime is 21311310022333. The reversal of 21311310022311 is 11322001311312.

It is not a de Polignac number, because 21311310022311 - 2²³ = 21311301633703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21311310022391) 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, 33477070 + ... + 34107723.

It is an arithmetic number, because the mean of its divisors is an integer number (1797417596430).

Almost surely, 2^{21311310022311} is an apocalyptic number.

21311310022311 is a deficient number, since it is larger than the sum of its proper divisors (7447371520569).

21311310022311 is a wasteful number, since it uses less digits than its factorization.

21311310022311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67586066.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21311310022311 its reverse (11322001311312), we get a palindrome (32633311333623).

The spelling of 21311310022311 in words is "twenty-one trillion, three hundred eleven billion, three hundred ten million, twenty-two thousand, three hundred eleven".