1231267 has 2 divisors, whose sum is σ = 1231268. Its totient is φ = 1231266.

The previous prime is 1231261. The next prime is 1231277. The reversal of 1231267 is 7621321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231267 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615633 + 615634.

It is an arithmetic number, because the mean of its divisors is an integer number (615634).

2^1231267 is an apocalyptic number.

1231267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231267 is an equidigital number, since it uses as much as digits as its factorization.

1231267 is an evil number, because the sum of its binary digits is even.

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

The square root of 1231267 is about 1109.6247113326. The cubic root of 1231267 is about 107.1809033983.

Adding to 1231267 its reverse (7621321), we get a palindrome (8852588).

The spelling of 1231267 in words is "one million, two hundred thirty-one thousand, two hundred sixty-seven".