31031100011 has 2 divisors, whose sum is σ = 31031100012. Its totient is φ = 31031100010.

The previous prime is 31031100007. The next prime is 31031100013. The reversal of 31031100011 is 11000113013.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (11000113013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31031100011 - 2² = 31031100007 is a prime.

Together with 31031100013, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 31031099965 and 31031100001.

It is not a weakly prime, because it can be changed into another prime (31031100013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15515550005 + 15515550006.

It is an arithmetic number, because the mean of its divisors is an integer number (15515550006).

Almost surely, 2^31031100011 is an apocalyptic number.

31031100011 is a deficient number, since it is larger than the sum of its proper divisors (1).

31031100011 is an equidigital number, since it uses as much as digits as its factorization.

31031100011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 11.

Adding to 31031100011 its reverse (11000113013), we get a palindrome (42031213024).

The spelling of 31031100011 in words is "thirty-one billion, thirty-one million, one hundred thousand, eleven".