1231258 has 16 divisors (see below), whose sum is σ = 2179584. Its totient is φ = 510480.

The previous prime is 1231247. The next prime is 1231261. The reversal of 1231258 is 8521321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 985 + ... + 1852.

It is an arithmetic number, because the mean of its divisors is an integer number (136224).

2^1231258 is an apocalyptic number.

1231258 is a deficient number, since it is larger than the sum of its proper divisors (948326).

1231258 is a wasteful number, since it uses less digits than its factorization.

1231258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877.

The product of its digits is 480, while the sum is 22.

The square root of 1231258 is about 1109.6206559000. The cubic root of 1231258 is about 107.1806422498.

Adding to 1231258 its reverse (8521321), we get a palindrome (9752579).

The spelling of 1231258 in words is "one million, two hundred thirty-one thousand, two hundred fifty-eight".