211244002031 has 2 divisors, whose sum is σ = 211244002032. Its totient is φ = 211244002030.

The previous prime is 211244002001. The next prime is 211244002091. The reversal of 211244002031 is 130200442112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211244002031 is a prime.

It is a super-2 number, since 2×211244002031² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 211244001994 and 211244002012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211244002001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105622001015 + 105622001016.

It is an arithmetic number, because the mean of its divisors is an integer number (105622001016).

Almost surely, 2^211244002031 is an apocalyptic number.

211244002031 is a deficient number, since it is larger than the sum of its proper divisors (1).

211244002031 is an equidigital number, since it uses as much as digits as its factorization.

211244002031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 211244002031 its reverse (130200442112), we get a palindrome (341444444143).

The spelling of 211244002031 in words is "two hundred eleven billion, two hundred forty-four million, two thousand, thirty-one".