1232001321523 has 24 divisors (see below), whose sum is σ = 1504817594880. Its totient is φ = 987758394480.

The previous prime is 1232001321521. The next prime is 1232001321533. The reversal of 1232001321523 is 3251231002321.

It is not a de Polignac number, because 1232001321523 - 2¹ = 1232001321521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232001321521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2886033 + ... + 3285298.

It is an arithmetic number, because the mean of its divisors is an integer number (62700733120).

Almost surely, 2^{1232001321523} is an apocalyptic number.

1232001321523 is a deficient number, since it is larger than the sum of its proper divisors (272816273357).

1232001321523 is an equidigital number, since it uses as much as digits as its factorization.

1232001321523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6171455 (or 6171436 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 1232001321523 its reverse (3251231002321), we get a palindrome (4483232323844).

The spelling of 1232001321523 in words is "one trillion, two hundred thirty-two billion, one million, three hundred twenty-one thousand, five hundred twenty-three".