1231432234 has 8 divisors (see below), whose sum is σ = 1849139460. Its totient is φ = 615052416.

The previous prime is 1231432231. The next prime is 1231432273. The reversal of 1231432234 is 4322341321.

It can be written as a sum of positive squares in 2 ways, for example, as 1121245225 + 110187009 = 33485^2 + 10497^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1231432199 and 1231432208.

It is not an unprimeable number, because it can be changed into a prime (1231432231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329529 + ... + 333244.

Almost surely, 2^1231432234 is an apocalyptic number.

1231432234 is a deficient number, since it is larger than the sum of its proper divisors (617707226).

1231432234 is an equidigital number, since it uses as much as digits as its factorization.

1231432234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663704.

The product of its digits is 3456, while the sum is 25.

The square root of 1231432234 is about 35091.7687499505. The cubic root of 1231432234 is about 1071.8569768397.

Adding to 1231432234 its reverse (4322341321), we get a palindrome (5553773555).

The spelling of 1231432234 in words is "one billion, two hundred thirty-one million, four hundred thirty-two thousand, two hundred thirty-four".