210312211131 has 80 divisors (see below), whose sum is σ = 349988221440. Its totient is φ = 124773929280.

The previous prime is 210312211097. The next prime is 210312211139. The reversal of 210312211131 is 131112213012.

210312211131 is a `hidden beast` number, since 2 + 10 + 312 + 211 + 131 = 666.

It is not a de Polignac number, because 210312211131 - 2¹⁹ = 210311686843 is a prime.

It is a super-2 number, since 2×210312211131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210312211139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 21859440 + ... + 21869058.

It is an arithmetic number, because the mean of its divisors is an integer number (4374852768).

Almost surely, 2^210312211131 is an apocalyptic number.

210312211131 is a deficient number, since it is larger than the sum of its proper divisors (139676010309).

210312211131 is a wasteful number, since it uses less digits than its factorization.

210312211131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10158 (or 10149 counting only the distinct ones).

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

Adding to 210312211131 its reverse (131112213012), we get a palindrome (341424424143).

The spelling of 210312211131 in words is "two hundred ten billion, three hundred twelve million, two hundred eleven thousand, one hundred thirty-one".