1323143340 has 48 divisors (see below), whose sum is σ = 3713713920. Its totient is φ = 351989440.

The previous prime is 1323143317. The next prime is 1323143359. The reversal of 1323143340 is 433413231.

1323143340 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1323143340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1176 + ... + 51455.

It is an arithmetic number, because the mean of its divisors is an integer number (77369040).

Almost surely, 2^1323143340 is an apocalyptic number.

1323143340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323143340 is an abundant number, since it is smaller than the sum of its proper divisors (2390570580).

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

1323143340 is a wasteful number, since it uses less digits than its factorization.

1323143340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53062 (or 53060 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 1323143340 is about 36375.0373195685. The cubic root of 1323143340 is about 1097.8313582025.

Adding to 1323143340 its reverse (433413231), we get a palindrome (1756556571).

The spelling of 1323143340 in words is "one billion, three hundred twenty-three million, one hundred forty-three thousand, three hundred forty".