11331647213 has 2 divisors, whose sum is σ = 11331647214. Its totient is φ = 11331647212.

The previous prime is 11331647191. The next prime is 11331647233. The reversal of 11331647213 is 31274613311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11238756169 + 92891044 = 106013^2 + 9638^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331647213 - 2¹² = 11331643117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11331647213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11331647233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665823606 + 5665823607.

It is an arithmetic number, because the mean of its divisors is an integer number (5665823607).

Almost surely, 2^11331647213 is an apocalyptic number.

It is an amenable number.

11331647213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331647213 is an equidigital number, since it uses as much as digits as its factorization.

11331647213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The spelling of 11331647213 in words is "eleven billion, three hundred thirty-one million, six hundred forty-seven thousand, two hundred thirteen".