1323540040 has 32 divisors (see below), whose sum is σ = 3074031360. Its totient is φ = 512337600.

The previous prime is 1323540017. The next prime is 1323540041. The reversal of 1323540040 is 400453231.

It is a junction number, because it is equal to n+sod(n) for n = 1323539993 and 1323540020.

It is not an unprimeable number, because it can be changed into a prime (1323540041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532446 + ... + 534925.

It is an arithmetic number, because the mean of its divisors is an integer number (96063480).

Almost surely, 2^1323540040 is an apocalyptic number.

1323540040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323540040 is an abundant number, since it is smaller than the sum of its proper divisors (1750491320).

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

1323540040 is a wasteful number, since it uses less digits than its factorization.

1323540040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067413 (or 1067409 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1323540040 is about 36380.4898262791. The cubic root of 1323540040 is about 1097.9410631679.

Adding to 1323540040 its reverse (400453231), we get a palindrome (1723993271).

The spelling of 1323540040 in words is "one billion, three hundred twenty-three million, five hundred forty thousand, forty".