211312022331 has 16 divisors (see below), whose sum is σ = 282636347040. Its totient is φ = 140431441920.

The previous prime is 211312022309. The next prime is 211312022333. The reversal of 211312022331 is 133220213112.

It is not a de Polignac number, because 211312022331 - 2⁷ = 211312022203 is a prime.

It is a super-2 number, since 2×211312022331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211312022298 and 211312022307.

It is not an unprimeable number, because it can be changed into a prime (211312022333) 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, 3529615 + ... + 3588983.

It is an arithmetic number, because the mean of its divisors is an integer number (17664771690).

Almost surely, 2^211312022331 is an apocalyptic number.

211312022331 is a deficient number, since it is larger than the sum of its proper divisors (71324324709).

211312022331 is a wasteful number, since it uses less digits than its factorization.

211312022331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63086.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 211312022331 its reverse (133220213112), we get a palindrome (344532235443).

The spelling of 211312022331 in words is "two hundred eleven billion, three hundred twelve million, twenty-two thousand, three hundred thirty-one".