20311232213111 has 8 divisors (see below), whose sum is σ = 23254511571360. Its totient is φ = 17378371543968.

The previous prime is 20311232213101. The next prime is 20311232213171. The reversal of 20311232213111 is 11131223211302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20311232213111 - 2³⁴ = 20294052343927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311232213101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2604668096 + ... + 2604675893.

It is an arithmetic number, because the mean of its divisors is an integer number (2906813946420).

Almost surely, 2^{20311232213111} is an apocalyptic number.

20311232213111 is a deficient number, since it is larger than the sum of its proper divisors (2943279358249).

20311232213111 is an equidigital number, since it uses as much as digits as its factorization.

20311232213111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5209344553.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 20311232213111 its reverse (11131223211302), we get a palindrome (31442455424413).

The spelling of 20311232213111 in words is "twenty trillion, three hundred eleven billion, two hundred thirty-two million, two hundred thirteen thousand, one hundred eleven".