1323111012372 has 72 divisors (see below), whose sum is σ = 3525139767240. Its totient is φ = 417794307840.

The previous prime is 1323111012331. The next prime is 1323111012373. The reversal of 1323111012372 is 2732101113231.

1323111012372 is a `hidden beast` number, since 1 + 323 + 1 + 1 + 101 + 237 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 824384097936 + 498726914436 = 907956^2 + 706206^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323111012373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11900779 + ... + 12011442.

It is an arithmetic number, because the mean of its divisors is an integer number (48960274545).

Almost surely, 2^{1323111012372} is an apocalyptic number.

1323111012372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1323111012372 is an abundant number, since it is smaller than the sum of its proper divisors (2202028754868).

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

1323111012372 is a wasteful number, since it uses less digits than its factorization.

1323111012372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23912313 (or 23912308 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The spelling of 1323111012372 in words is "one trillion, three hundred twenty-three billion, one hundred eleven million, twelve thousand, three hundred seventy-two".