1231130227 has 2 divisors, whose sum is σ = 1231130228. Its totient is φ = 1231130226.

The previous prime is 1231130221. The next prime is 1231130237. The reversal of 1231130227 is 7220311321.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (7220311321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1231130227 - 2¹⁵ = 1231097459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231130198 and 1231130207.

It is not a weakly prime, because it can be changed into another prime (1231130221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615565113 + 615565114.

It is an arithmetic number, because the mean of its divisors is an integer number (615565114).

Almost surely, 2^1231130227 is an apocalyptic number.

1231130227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231130227 is an equidigital number, since it uses as much as digits as its factorization.

1231130227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1231130227 is about 35087.4653829541. The cubic root of 1231130227 is about 1071.7693458770.

Adding to 1231130227 its reverse (7220311321), we get a palindrome (8451441548).

The spelling of 1231130227 in words is "one billion, two hundred thirty-one million, one hundred thirty thousand, two hundred twenty-seven".