1223231132 has 12 divisors (see below), whose sum is σ = 2146721136. Its totient is φ = 609882240.

The previous prime is 1223231131. The next prime is 1223231161. The reversal of 1223231132 is 2311323221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223231131) 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, 431744 + ... + 434567.

It is an arithmetic number, because the mean of its divisors is an integer number (178893428).

Almost surely, 2^1223231132 is an apocalyptic number.

It is an amenable number.

1223231132 is a deficient number, since it is larger than the sum of its proper divisors (923490004).

1223231132 is a wasteful number, since it uses less digits than its factorization.

1223231132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866668 (or 866666 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 1223231132 is about 34974.7213284109. The cubic root of 1223231132 is about 1069.4722211547.

Adding to 1223231132 its reverse (2311323221), we get a palindrome (3534554353).

The spelling of 1223231132 in words is "one billion, two hundred twenty-three million, two hundred thirty-one thousand, one hundred thirty-two".