1131120213 has 4 divisors (see below), whose sum is σ = 1508160288. Its totient is φ = 754080140.

The previous prime is 1131120187. The next prime is 1131120253. The reversal of 1131120213 is 3120211311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1131120213 - 2¹⁰ = 1131119189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131120192 and 1131120201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131120253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188520033 + ... + 188520038.

It is an arithmetic number, because the mean of its divisors is an integer number (377040072).

Almost surely, 2^1131120213 is an apocalyptic number.

It is an amenable number.

1131120213 is a deficient number, since it is larger than the sum of its proper divisors (377040075).

1131120213 is an equidigital number, since it uses as much as digits as its factorization.

1131120213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377040074.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1131120213 is about 33632.1306639945. The cubic root of 1131120213 is about 1041.9245100489.

Adding to 1131120213 its reverse (3120211311), we get a palindrome (4251331524).

The spelling of 1131120213 in words is "one billion, one hundred thirty-one million, one hundred twenty thousand, two hundred thirteen".