211312312011 has 6 divisors (see below), whose sum is σ = 305228895140. Its totient is φ = 140874874668.

The previous prime is 211312312007. The next prime is 211312312063. The reversal of 211312312011 is 110213213112.

It is not a de Polignac number, because 211312312011 - 2² = 211312312007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211312312091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11739572881 + ... + 11739572898.

Almost surely, 2^211312312011 is an apocalyptic number.

211312312011 is a deficient number, since it is larger than the sum of its proper divisors (93916583129).

211312312011 is a wasteful number, since it uses less digits than its factorization.

211312312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23479145785 (or 23479145782 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 211312312011 its reverse (110213213112), we get a palindrome (321525525123).

The spelling of 211312312011 in words is "two hundred eleven billion, three hundred twelve million, three hundred twelve thousand, eleven".