1321232232 has 16 divisors (see below), whose sum is σ = 3303080640. Its totient is φ = 440410736.

The previous prime is 1321232201. The next prime is 1321232239. The reversal of 1321232232 is 2322321231.

It is a happy number.

It is a super-2 number, since 2×1321232232² = 3491309221751403648, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1321232199 and 1321232208.

It is not an unprimeable number, because it can be changed into a prime (1321232239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27525648 + ... + 27525695.

It is an arithmetic number, because the mean of its divisors is an integer number (206442540).

Almost surely, 2^1321232232 is an apocalyptic number.

1321232232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1321232232 is an abundant number, since it is smaller than the sum of its proper divisors (1981848408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321232232 is a wasteful number, since it uses less digits than its factorization.

1321232232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55051352 (or 55051348 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 1321232232 is about 36348.7583281740. The cubic root of 1321232232 is about 1097.3025454451.

Adding to 1321232232 its reverse (2322321231), we get a palindrome (3643553463).

The spelling of 1321232232 in words is "one billion, three hundred twenty-one million, two hundred thirty-two thousand, two hundred thirty-two".