1403423320 has 192 divisors, whose sum is σ = 3645008640. Its totient is φ = 485222400.

The previous prime is 1403423311. The next prime is 1403423323. The reversal of 1403423320 is 233243041.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1403423291 and 1403423300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1403423323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7753630 + ... + 7753810.

It is an arithmetic number, because the mean of its divisors is an integer number (18984420).

Almost surely, 2^1403423320 is an apocalyptic number.

1403423320 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 1403423320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1822504320).

1403423320 is an abundant number, since it is smaller than the sum of its proper divisors (2241585320).

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

1403423320 is a wasteful number, since it uses less digits than its factorization.

1403423320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 1403423320 is about 37462.2919747311. The cubic root of 1403423320 is about 1119.6000166105.

Adding to 1403423320 its reverse (233243041), we get a palindrome (1636666361).

The spelling of 1403423320 in words is "one billion, four hundred three million, four hundred twenty-three thousand, three hundred twenty".