311212130211 has 16 divisors (see below), whose sum is σ = 461128431520. Its totient is φ = 207441712800.

The previous prime is 311212130197. The next prime is 311212130221. The reversal of 311212130211 is 112031212113.

311212130211 is a `hidden beast` number, since 311 + 2 + 12 + 130 + 211 = 666.

It is not a de Polignac number, because 311212130211 - 2⁵ = 311212130179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311212130221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 744520 + ... + 1084773.

It is an arithmetic number, because the mean of its divisors is an integer number (28820526970).

Almost surely, 2^311212130211 is an apocalyptic number.

311212130211 is a deficient number, since it is larger than the sum of its proper divisors (149916301309).

311212130211 is a wasteful number, since it uses less digits than its factorization.

311212130211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835603 (or 1835597 counting only the distinct ones).

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

Adding to 311212130211 its reverse (112031212113), we get a palindrome (423243342324).

The spelling of 311212130211 in words is "three hundred eleven billion, two hundred twelve million, one hundred thirty thousand, two hundred eleven".