211213110031 has 24 divisors (see below), whose sum is σ = 275277631104. Its totient is φ = 157425890160.

The previous prime is 211213110001. The next prime is 211213110067. The reversal of 211213110031 is 130011312112.

It is a happy number.

It is not a de Polignac number, because 211213110031 - 2⁹ = 211213109519 is a prime.

It is a super-2 number, since 2×211213110031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211213109987 and 211213110014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211213110001) 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 in 23 ways as a sum of consecutive naturals, for example, 2551921 + ... + 2633386.

It is an arithmetic number, because the mean of its divisors is an integer number (11469901296).

Almost surely, 2^211213110031 is an apocalyptic number.

211213110031 is a deficient number, since it is larger than the sum of its proper divisors (64064521073).

211213110031 is a wasteful number, since it uses less digits than its factorization.

211213110031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5185371 (or 5185348 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 211213110031 its reverse (130011312112), we get a palindrome (341224422143).

The spelling of 211213110031 in words is "two hundred eleven billion, two hundred thirteen million, one hundred ten thousand, thirty-one".