1231268 has 6 divisors (see below), whose sum is σ = 2154726. Its totient is φ = 615632.

The previous prime is 1231267. The next prime is 1231277. The reversal of 1231268 is 8621321.

It can be written as a sum of positive squares in only one way, i.e., 1183744 + 47524 = 1088^2 + 218^2 .

It is not an unprimeable number, because it can be changed into a prime (1231261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153905 + ... + 153912.

It is an arithmetic number, because the mean of its divisors is an integer number (359121).

2^1231268 is an apocalyptic number.

It is an amenable number.

1231268 is a deficient number, since it is larger than the sum of its proper divisors (923458).

1231268 is a wasteful number, since it uses less digits than its factorization.

1231268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307821 (or 307819 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 1231268 is about 1109.6251619353. The cubic root of 1231268 is about 107.1809324147.

Adding to 1231268 its reverse (8621321), we get a palindrome (9852589).

The spelling of 1231268 in words is "one million, two hundred thirty-one thousand, two hundred sixty-eight".