1232181 has 12 divisors (see below), whose sum is σ = 1841580. Its totient is φ = 792960.

The previous prime is 1232171. The next prime is 1232183. The reversal of 1232181 is 1812321.

It can be written as a sum of positive squares in 2 ways, for example, as 656100 + 576081 = 810^2 + 759^2 .

It is not a de Polignac number, because 1232181 - 2⁹ = 1231669 is a prime.

It is a super-2 number, since 2×1232181² = 3036540033522, which contains 22 as substring.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2100 + ... + 2621.

It is an arithmetic number, because the mean of its divisors is an integer number (153465).

2^1232181 is an apocalyptic number.

It is an amenable number.

1232181 is a deficient number, since it is larger than the sum of its proper divisors (609399).

1232181 is a wasteful number, since it uses less digits than its factorization.

1232181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4756 (or 4753 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1232181 is about 1110.0364858868. The cubic root of 1232181 is about 107.2074178520.

It can be divided in two parts, 12321 and 81, that multiplied together give a square (998001 = 999²).

The spelling of 1232181 in words is "one million, two hundred thirty-two thousand, one hundred eighty-one".