1231136 has 24 divisors (see below), whose sum is σ = 2459520. Its totient is φ = 606528.

The previous prime is 1231129. The next prime is 1231141. The reversal of 1231136 is 6311321.

It is an unprimeable number.

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, 2285 + ... + 2771.

It is an arithmetic number, because the mean of its divisors is an integer number (102480).

2^1231136 is an apocalyptic number.

1231136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1231136 is a deficient number, since it is larger than the sum of its proper divisors (1228384).

1231136 is an equidigital number, since it uses as much as digits as its factorization.

1231136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 568 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 1231136 is about 1109.5656807959. The cubic root of 1231136 is about 107.1771021117.

Adding to 1231136 its reverse (6311321), we get a palindrome (7542457).

The spelling of 1231136 in words is "one million, two hundred thirty-one thousand, one hundred thirty-six".