1231052267 has 2 divisors, whose sum is σ = 1231052268. Its totient is φ = 1231052266.

The previous prime is 1231052239. The next prime is 1231052269. The reversal of 1231052267 is 7622501321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231052267 is a prime.

Together with 1231052269, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1231052269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615526133 + 615526134.

It is an arithmetic number, because the mean of its divisors is an integer number (615526134).

Almost surely, 2^1231052267 is an apocalyptic number.

1231052267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231052267 is an equidigital number, since it uses as much as digits as its factorization.

1231052267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1231052267 is about 35086.3544273269. The cubic root of 1231052267 is about 1071.7467225183.

Adding to 1231052267 its reverse (7622501321), we get a palindrome (8853553588).

The spelling of 1231052267 in words is "one billion, two hundred thirty-one million, fifty-two thousand, two hundred sixty-seven".