1232401320 has 96 divisors (see below), whose sum is σ = 4015762920. Its totient is φ = 327782400.

The previous prime is 1232401319. The next prime is 1232401327. The reversal of 1232401320 is 231042321.

1232401320 is a `hidden beast` number, since 1 + 232 + 401 + 32 + 0 = 666.

1232401320 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 4 ways, for example, as 1220663844 + 11737476 = 34938^2 + 3426^2 .

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 = 1232401293 and 1232401302.

It is not an unprimeable number, because it can be changed into a prime (1232401327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140092 + ... + 148628.

Almost surely, 2^1232401320 is an apocalyptic number.

1232401320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1232401320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2007881460).

1232401320 is an abundant number, since it is smaller than the sum of its proper divisors (2783361600).

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

1232401320 is a wasteful number, since it uses less digits than its factorization.

1232401320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8955 (or 8948 counting only the distinct ones).

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

The square root of 1232401320 is about 35105.5739164025. The cubic root of 1232401320 is about 1072.1380720836.

Adding to 1232401320 its reverse (231042321), we get a palindrome (1463443641).

The spelling of 1232401320 in words is "one billion, two hundred thirty-two million, four hundred one thousand, three hundred twenty".