311213232213111 has 8 divisors (see below), whose sum is σ = 461056640315760. Its totient is φ = 207475488142056.

The previous prime is 311213232213109. The next prime is 311213232213137. The reversal of 311213232213111 is 111312232312113.

311213232213111 is a `hidden beast` number, since 3 + 1 + 1 + 2 + 1 + 323 + 2 + 21 + 311 + 1 = 666.

It is not a de Polignac number, because 311213232213111 - 2¹ = 311213232213109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 11526416007893 = 311213232213111 / (3 + 1 + 1 + 2 + 1 + 3 + 2 + 3 + 2 + 2 + 1 + 3 + 1 + 1 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311213232213151) 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, 5763208003920 + ... + 5763208003973.

It is an arithmetic number, because the mean of its divisors is an integer number (57632080039470).

Almost surely, 2^{311213232213111} is an apocalyptic number.

311213232213111 is a deficient number, since it is larger than the sum of its proper divisors (149843408102649).

311213232213111 is a wasteful number, since it uses less digits than its factorization.

311213232213111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11526416007902 (or 11526416007896 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

Adding to 311213232213111 its reverse (111312232312113), we get a palindrome (422525464525224).

The spelling of 311213232213111 in words is "three hundred eleven trillion, two hundred thirteen billion, two hundred thirty-two million, two hundred thirteen thousand, one hundred eleven".