31100011211 has 2 divisors, whose sum is σ = 31100011212. Its totient is φ = 31100011210.

The previous prime is 31100011181. The next prime is 31100011231. The reversal of 31100011211 is 11211000113.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (11211000113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31100011211 - 2³⁰ = 30026269387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31100011192 and 31100011201.

It is not a weakly prime, because it can be changed into another prime (31100011231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15550005605 + 15550005606.

It is an arithmetic number, because the mean of its divisors is an integer number (15550005606).

Almost surely, 2^31100011211 is an apocalyptic number.

31100011211 is a deficient number, since it is larger than the sum of its proper divisors (1).

31100011211 is an equidigital number, since it uses as much as digits as its factorization.

31100011211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 31100011211 its reverse (11211000113), we get a palindrome (42311011324).

The spelling of 31100011211 in words is "thirty-one billion, one hundred million, eleven thousand, two hundred eleven".