210131212131 has 6 divisors (see below), whose sum is σ = 303522861980. Its totient is φ = 140087474748.

The previous prime is 210131212117. The next prime is 210131212147. The reversal of 210131212131 is 131212131012.

210131212131 is a `hidden beast` number, since 210 + 1 + 312 + 12 + 131 = 666.

It is not a de Polignac number, because 210131212131 - 2¹¹ = 210131210083 is a prime.

It is a super-3 number, since 3×210131212131³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210131212531) 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, 11673956221 + ... + 11673956238.

Almost surely, 2^210131212131 is an apocalyptic number.

210131212131 is a deficient number, since it is larger than the sum of its proper divisors (93391649849).

210131212131 is a wasteful number, since it uses less digits than its factorization.

210131212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23347912465 (or 23347912462 counting only the distinct ones).

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

Adding to 210131212131 its reverse (131212131012), we get a palindrome (341343343143).

The spelling of 210131212131 in words is "two hundred ten billion, one hundred thirty-one million, two hundred twelve thousand, one hundred thirty-one".