212311016131 has 2 divisors, whose sum is σ = 212311016132. Its totient is φ = 212311016130.

The previous prime is 212311016119. The next prime is 212311016149. The reversal of 212311016131 is 131610113212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212311016131 - 2⁹ = 212311015619 is a prime.

It is a super-2 number, since 2×212311016131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212311016531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106155508065 + 106155508066.

It is an arithmetic number, because the mean of its divisors is an integer number (106155508066).

Almost surely, 2^212311016131 is an apocalyptic number.

212311016131 is a deficient number, since it is larger than the sum of its proper divisors (1).

212311016131 is an equidigital number, since it uses as much as digits as its factorization.

212311016131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 212311016131 its reverse (131610113212), we get a palindrome (343921129343).

The spelling of 212311016131 in words is "two hundred twelve billion, three hundred eleven million, sixteen thousand, one hundred thirty-one".