1131130229 has 4 divisors (see below), whose sum is σ = 1133649900. Its totient is φ = 1128610560.

The previous prime is 1131130223. The next prime is 1131130237. The reversal of 1131130229 is 9220311311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 717007729 + 414122500 = 26777^2 + 20350^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131130229 - 2⁴ = 1131130213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131130223) 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, 1259162 + ... + 1260059.

It is an arithmetic number, because the mean of its divisors is an integer number (283412475).

Almost surely, 2^1131130229 is an apocalyptic number.

It is an amenable number.

1131130229 is a deficient number, since it is larger than the sum of its proper divisors (2519671).

1131130229 is an equidigital number, since it uses as much as digits as its factorization.

1131130229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519670.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1131130229 is about 33632.2795688904. The cubic root of 1131130229 is about 1041.9275854323.

The spelling of 1131130229 in words is "one billion, one hundred thirty-one million, one hundred thirty thousand, two hundred twenty-nine".