1231256 has 16 divisors (see below), whose sum is σ = 2486400. Its totient is φ = 568224.

The previous prime is 1231247. The next prime is 1231261. The reversal of 1231256 is 6521321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5816 + ... + 6023.

It is an arithmetic number, because the mean of its divisors is an integer number (155400).

2^1231256 is an apocalyptic number.

It is an amenable number.

1231256 is an abundant number, since it is smaller than the sum of its proper divisors (1255144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231256 is a wasteful number, since it uses less digits than its factorization.

1231256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11858 (or 11854 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 1231256 is about 1109.6197546908. The cubic root of 1231256 is about 107.1805842167.

Adding to 1231256 its reverse (6521321), we get a palindrome (7752577).

The spelling of 1231256 in words is "one million, two hundred thirty-one thousand, two hundred fifty-six".