211001011031 has 2 divisors, whose sum is σ = 211001011032. Its totient is φ = 211001011030.

The previous prime is 211001010971. The next prime is 211001011033. The reversal of 211001011031 is 130110100112.

It is a happy number.

211001011031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211001011031 - 2³⁰ = 209927269207 is a prime.

It is a super-2 number, since 2×211001011031² (a number of 23 digits) contains 22 as substring.

Together with 211001011033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211001011033) 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, 105500505515 + 105500505516.

It is an arithmetic number, because the mean of its divisors is an integer number (105500505516).

Almost surely, 2^211001011031 is an apocalyptic number.

211001011031 is a deficient number, since it is larger than the sum of its proper divisors (1).

211001011031 is an equidigital number, since it uses as much as digits as its factorization.

211001011031 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 211001011031 its reverse (130110100112), we get a palindrome (341111111143).

The spelling of 211001011031 in words is "two hundred eleven billion, one million, eleven thousand, thirty-one".