1231134227 has 2 divisors, whose sum is σ = 1231134228. Its totient is φ = 1231134226.

The previous prime is 1231134221. The next prime is 1231134253. The reversal of 1231134227 is 7224311321.

It is an a-pointer prime, because the next prime (1231134253) can be obtained adding 1231134227 to its sum of digits (26).

It is a weak prime.

It is an emirp because it is prime and its reverse (7224311321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1231134227 - 2¹⁰ = 1231133203 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231134196 and 1231134205.

It is not a weakly prime, because it can be changed into another prime (1231134221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615567113 + 615567114.

It is an arithmetic number, because the mean of its divisors is an integer number (615567114).

Almost surely, 2^1231134227 is an apocalyptic number.

1231134227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231134227 is an equidigital number, since it uses as much as digits as its factorization.

1231134227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 1231134227 is about 35087.5223833203. The cubic root of 1231134227 is about 1071.7705066187.

Adding to 1231134227 its reverse (7224311321), we get a palindrome (8455445548).

The spelling of 1231134227 in words is "one billion, two hundred thirty-one million, one hundred thirty-four thousand, two hundred twenty-seven".