1131202229 has 2 divisors, whose sum is σ = 1131202230. Its totient is φ = 1131202228.

The previous prime is 1131202211. The next prime is 1131202243. The reversal of 1131202229 is 9222021311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1056120004 + 75082225 = 32498^2 + 8665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131202229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131202249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565601114 + 565601115.

It is an arithmetic number, because the mean of its divisors is an integer number (565601115).

Almost surely, 2^1131202229 is an apocalyptic number.

It is an amenable number.

1131202229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131202229 is an equidigital number, since it uses as much as digits as its factorization.

1131202229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1131202229 is about 33633.3499520937. The cubic root of 1131202229 is about 1041.9496922869.

The spelling of 1131202229 in words is "one billion, one hundred thirty-one million, two hundred two thousand, two hundred twenty-nine".