1232140321 has 4 divisors (see below), whose sum is σ = 1236525444. Its totient is φ = 1227755200.

The previous prime is 1232140303. The next prime is 1232140333. The reversal of 1232140321 is 1230412321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 844483600 + 387656721 = 29060^2 + 19689^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232140321 - 2⁵ = 1232140289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232140381) 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, 2192140 + ... + 2192701.

It is an arithmetic number, because the mean of its divisors is an integer number (309131361).

Almost surely, 2^1232140321 is an apocalyptic number.

It is an amenable number.

1232140321 is a deficient number, since it is larger than the sum of its proper divisors (4385123).

1232140321 is an equidigital number, since it uses as much as digits as its factorization.

1232140321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4385122.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1232140321 is about 35101.8563754113. The cubic root of 1232140321 is about 1072.0623806356.

Adding to 1232140321 its reverse (1230412321), we get a palindrome (2462552642).

Subtracting from 1232140321 its reverse (1230412321), we obtain a cube (1728000 = 120³).

The spelling of 1232140321 in words is "one billion, two hundred thirty-two million, one hundred forty thousand, three hundred twenty-one".