1320401232 has 60 divisors (see below), whose sum is σ = 3699048340. Its totient is φ = 439686144.

The previous prime is 1320401213. The next prime is 1320401239. The reversal of 1320401232 is 2321040231.

1320401232 is a `hidden beast` number, since 1 + 32 + 0 + 401 + 232 = 666.

1320401232 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 2 ways, for example, as 74028816 + 1246372416 = 8604^2 + 35304^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320401239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156744 + ... + 164952.

Almost surely, 2^1320401232 is an apocalyptic number.

1320401232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1320401232 is an abundant number, since it is smaller than the sum of its proper divisors (2378647108).

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

1320401232 is a wasteful number, since it uses less digits than its factorization.

1320401232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9340 (or 9331 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1320401232 is about 36337.3256032967. The cubic root of 1320401232 is about 1097.0724446767.

Adding to 1320401232 its reverse (2321040231), we get a palindrome (3641441463).

The spelling of 1320401232 in words is "one billion, three hundred twenty million, four hundred one thousand, two hundred thirty-two".