1323012402240 has 112 divisors (see below), whose sum is σ = 4211363931840. Its totient is φ = 351896258560.

The previous prime is 1323012402227. The next prime is 1323012402289. The reversal of 1323012402240 is 422042103231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1323012402240.

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, 1397946 + ... + 2144825.

Almost surely, 2^{1323012402240} is an apocalyptic number.

1323012402240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323012402240 is an abundant number, since it is smaller than the sum of its proper divisors (2888351529600).

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

1323012402240 is a wasteful number, since it uses less digits than its factorization.

1323012402240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543180 (or 3543170 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1323012402240 its reverse (422042103231), we get a palindrome (1745054505471).

The spelling of 1323012402240 in words is "one trillion, three hundred twenty-three billion, twelve million, four hundred two thousand, two hundred forty".