1101323213 has 2 divisors, whose sum is σ = 1101323214. Its totient is φ = 1101323212.

The previous prime is 1101323207. The next prime is 1101323231. The reversal of 1101323213 is 3123231011.

Together with next prime (1101323231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1081225924 + 20097289 = 32882^2 + 4483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101323213 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1101323191 and 1101323200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101323203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550661606 + 550661607.

It is an arithmetic number, because the mean of its divisors is an integer number (550661607).

Almost surely, 2^1101323213 is an apocalyptic number.

It is an amenable number.

1101323213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101323213 is an equidigital number, since it uses as much as digits as its factorization.

1101323213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1101323213 is about 33186.1900946764. The cubic root of 1101323213 is about 1032.6938667090.

Adding to 1101323213 its reverse (3123231011), we get a palindrome (4224554224).

The spelling of 1101323213 in words is "one billion, one hundred one million, three hundred twenty-three thousand, two hundred thirteen".