211140031 has 2 divisors, whose sum is σ = 211140032. Its totient is φ = 211140030.

The previous prime is 211140011. The next prime is 211140049. The reversal of 211140031 is 130041112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211140031 - 2⁹ = 211139519 is a prime.

It is a super-2 number, since 2×211140031² = 89160225381361922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211139993 and 211140020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211140011) 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, 105570015 + 105570016.

It is an arithmetic number, because the mean of its divisors is an integer number (105570016).

Almost surely, 2^211140031 is an apocalyptic number.

211140031 is a deficient number, since it is larger than the sum of its proper divisors (1).

211140031 is an equidigital number, since it uses as much as digits as its factorization.

211140031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 211140031 is about 14530.6583126849. The cubic root of 211140031 is about 595.4658508331.

Adding to 211140031 its reverse (130041112), we get a palindrome (341181143).

The spelling of 211140031 in words is "two hundred eleven million, one hundred forty thousand, thirty-one".