311432110021211 has 4 divisors (see below), whose sum is σ = 311432151723624. Its totient is φ = 311432068318800.

The previous prime is 311432110021171. The next prime is 311432110021267. The reversal of 311432110021211 is 112120011234113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311432110021211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311432110021411) 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, 6233225 + ... + 25723866.

It is an arithmetic number, because the mean of its divisors is an integer number (77858037930906).

Almost surely, 2^{311432110021211} is an apocalyptic number.

311432110021211 is a deficient number, since it is larger than the sum of its proper divisors (41702413).

311432110021211 is an equidigital number, since it uses as much as digits as its factorization.

311432110021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41702412.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 311432110021211 its reverse (112120011234113), we get a palindrome (423552121255324).

The spelling of 311432110021211 in words is "three hundred eleven trillion, four hundred thirty-two billion, one hundred ten million, twenty-one thousand, two hundred eleven".