213431342011 has 2 divisors, whose sum is σ = 213431342012. Its totient is φ = 213431342010.

The previous prime is 213431341997. The next prime is 213431342023. The reversal of 213431342011 is 110243134312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213431342011 - 2¹¹ = 213431339963 is a prime.

It is not a weakly prime, because it can be changed into another prime (213431345011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106715671005 + 106715671006.

It is an arithmetic number, because the mean of its divisors is an integer number (106715671006).

Almost surely, 2^213431342011 is an apocalyptic number.

213431342011 is a deficient number, since it is larger than the sum of its proper divisors (1).

213431342011 is an equidigital number, since it uses as much as digits as its factorization.

213431342011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 213431342011 its reverse (110243134312), we get a palindrome (323674476323).

The spelling of 213431342011 in words is "two hundred thirteen billion, four hundred thirty-one million, three hundred forty-two thousand, eleven".