211443142031 has 16 divisors (see below), whose sum is σ = 231506615808. Its totient is φ = 191521008000.

The previous prime is 211443142007. The next prime is 211443142069. The reversal of 211443142031 is 130241344112.

It is a cyclic number.

It is not a de Polignac number, because 211443142031 - 2¹⁸ = 211442879887 is a prime.

It is a super-2 number, since 2×211443142031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211443145031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3867770 + ... + 3922056.

It is an arithmetic number, because the mean of its divisors is an integer number (14469163488).

Almost surely, 2^211443142031 is an apocalyptic number.

211443142031 is a deficient number, since it is larger than the sum of its proper divisors (20063473777).

211443142031 is a wasteful number, since it uses less digits than its factorization.

211443142031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55582.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 211443142031 its reverse (130241344112), we get a palindrome (341684486143).

The spelling of 211443142031 in words is "two hundred eleven billion, four hundred forty-three million, one hundred forty-two thousand, thirty-one".