1131100213 has 2 divisors, whose sum is σ = 1131100214. Its totient is φ = 1131100212.

The previous prime is 1131100211. The next prime is 1131100237. The reversal of 1131100213 is 3120011311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 960876004 + 170224209 = 30998^2 + 13047^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131100213 - 2¹ = 1131100211 is a prime.

Together with 1131100211, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1131100193 and 1131100202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131100211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565550106 + 565550107.

It is an arithmetic number, because the mean of its divisors is an integer number (565550107).

Almost surely, 2^1131100213 is an apocalyptic number.

It is an amenable number.

1131100213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131100213 is an equidigital number, since it uses as much as digits as its factorization.

1131100213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1131100213 is about 33631.8333279647. The cubic root of 1131100213 is about 1041.9183690532.

Adding to 1131100213 its reverse (3120011311), we get a palindrome (4251111524).

The spelling of 1131100213 in words is "one billion, one hundred thirty-one million, one hundred thousand, two hundred thirteen".