1232123432 has 32 divisors (see below), whose sum is σ = 2451556800. Its totient is φ = 579283584.

The previous prime is 1232123413. The next prime is 1232123437. The reversal of 1232123432 is 2343212321.

1232123432 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a Harshad number since it is a multiple of its sum of digits (23).

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

It is a junction number, because it is equal to n+sod(n) for n = 1232123398 and 1232123407.

It is not an unprimeable number, because it can be changed into a prime (1232123437) 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 7 ways as a sum of consecutive naturals, for example, 45893 + ... + 67604.

It is an arithmetic number, because the mean of its divisors is an integer number (76611150).

Almost surely, 2^1232123432 is an apocalyptic number.

It is an amenable number.

1232123432 is a deficient number, since it is larger than the sum of its proper divisors (1219433368).

1232123432 is a wasteful number, since it uses less digits than its factorization.

1232123432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113585 (or 113581 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 1232123432 is about 35101.6158032647. The cubic root of 1232123432 is about 1072.0574823450.

Adding to 1232123432 its reverse (2343212321), we get a palindrome (3575335753).

Subtracting 1232123432 from its reverse (2343212321), we obtain a square (1111088889 = 33333²).

It can be divided in two parts, 12321 and 23432, that added together give a palindrome (35753).

The spelling of 1232123432 in words is "one billion, two hundred thirty-two million, one hundred twenty-three thousand, four hundred thirty-two".