131012213 has 2 divisors, whose sum is σ = 131012214. Its totient is φ = 131012212.

The previous prime is 131012207. The next prime is 131012249. The reversal of 131012213 is 312210131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87478609 + 43533604 = 9353^2 + 6598^2 .

It is a cyclic number.

It is not a de Polignac number, because 131012213 - 2¹⁰ = 131011189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131012113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65506106 + 65506107.

It is an arithmetic number, because the mean of its divisors is an integer number (65506107).

Almost surely, 2^131012213 is an apocalyptic number.

It is an amenable number.

131012213 is a deficient number, since it is larger than the sum of its proper divisors (1).

131012213 is an equidigital number, since it uses as much as digits as its factorization.

131012213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 131012213 is about 11446.0566572073. The cubic root of 131012213 is about 507.8910902265.

Adding to 131012213 its reverse (312210131), we get a palindrome (443222344).

The spelling of 131012213 in words is "one hundred thirty-one million, twelve thousand, two hundred thirteen".