211031102106156 has 24 divisors (see below), whose sum is σ = 492551976176064. Its totient is φ = 70322833378960.

The previous prime is 211031102106113. The next prime is 211031102106193. The reversal of 211031102106156 is 651601201130112.

It is a super-2 number, since 2×211031102106156² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2608373250 + ... + 2608454153.

It is an arithmetic number, because the mean of its divisors is an integer number (20522999007336).

Almost surely, 2^{211031102106156} is an apocalyptic number.

It is an amenable number.

211031102106156 is an abundant number, since it is smaller than the sum of its proper divisors (281520874069908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211031102106156 is a wasteful number, since it uses less digits than its factorization.

211031102106156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5216830781 (or 5216830779 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

Adding to 211031102106156 its reverse (651601201130112), we get a palindrome (862632303236268).

The spelling of 211031102106156 in words is "two hundred eleven trillion, thirty-one billion, one hundred two million, one hundred six thousand, one hundred fifty-six".