1231008 has 24 divisors (see below), whose sum is σ = 3231648. Its totient is φ = 410304.

The previous prime is 1231003. The next prime is 1231039. The reversal of 1231008 is 8001321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1231001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6316 + ... + 6507.

It is an arithmetic number, because the mean of its divisors is an integer number (134652).

2^1231008 is an apocalyptic number.

It is an amenable number.

1231008 is an abundant number, since it is smaller than the sum of its proper divisors (2000640).

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

1231008 is a wasteful number, since it uses less digits than its factorization.

1231008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12836 (or 12828 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1231008 is about 1109.5079990699. The cubic root of 1231008 is about 107.1733876169.

Adding to 1231008 its reverse (8001321), we get a palindrome (9232329).

The spelling of 1231008 in words is "one million, two hundred thirty-one thousand, eight".