1323121032 has 24 divisors (see below), whose sum is σ = 3583452990. Its totient is φ = 441040320.

The previous prime is 1323121003. The next prime is 1323121039. The reversal of 1323121032 is 2301213231.

1323121032 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 709369956 + 613751076 = 26634^2 + 24774^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1323120996 and 1323121014.

It is not an unprimeable number, because it can be changed into a prime (1323121039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9188269 + ... + 9188412.

Almost surely, 2^1323121032 is an apocalyptic number.

1323121032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1323121032 is an abundant number, since it is smaller than the sum of its proper divisors (2260331958).

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

1323121032 is a wasteful number, since it uses less digits than its factorization.

1323121032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18376693 (or 18376686 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1323121032 is about 36374.7306794153. The cubic root of 1323121032 is about 1097.8251884100.

Adding to 1323121032 its reverse (2301213231), we get a palindrome (3624334263).

The spelling of 1323121032 in words is "one billion, three hundred twenty-three million, one hundred twenty-one thousand, thirty-two".