211310031223112 has 8 divisors (see below), whose sum is σ = 396206308543350. Its totient is φ = 105655015611552.

The previous prime is 211310031223099. The next prime is 211310031223121. The reversal of 211310031223112 is 211322130013112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 161625098270596 + 49684932952516 = 12713186^2 + 7048754^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13206876951437 + ... + 13206876951452.

Almost surely, 2^{211310031223112} is an apocalyptic number.

It is an amenable number.

211310031223112 is a deficient number, since it is larger than the sum of its proper divisors (184896277320238).

211310031223112 is a wasteful number, since it uses less digits than its factorization.

211310031223112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26413753902895 (or 26413753902891 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 211310031223112 its reverse (211322130013112), we get a palindrome (422632161236224).

The spelling of 211310031223112 in words is "two hundred eleven trillion, three hundred ten billion, thirty-one million, two hundred twenty-three thousand, one hundred twelve".