1323351131040 has 72 divisors (see below), whose sum is σ = 4515935739588. Its totient is φ = 352893634560.

The previous prime is 1323351131017. The next prime is 1323351131041. The reversal of 1323351131040 is 401311533231.

1323351131040 is a `hidden beast` number, since 1 + 3 + 2 + 335 + 11 + 310 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1298861384976 + 24489746064 = 1139676^2 + 156492^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 1323351130995 and 1323351131013.

It is not an unprimeable number, because it can be changed into a prime (1323351131041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 459495481 + ... + 459498360.

Almost surely, 2^{1323351131040} is an apocalyptic number.

1323351131040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323351131040 is an abundant number, since it is smaller than the sum of its proper divisors (3192584608548).

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

1323351131040 is a wasteful number, since it uses less digits than its factorization.

1323351131040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918993862 (or 918993851 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 1323351131040 its reverse (401311533231), we get a palindrome (1724662664271).

The spelling of 1323351131040 in words is "one trillion, three hundred twenty-three billion, three hundred fifty-one million, one hundred thirty-one thousand, forty".