1232001531523 has 8 divisors (see below), whose sum is σ = 1408180019040. Its totient is φ = 1055867611200.

The previous prime is 1232001531503. The next prime is 1232001531529. The reversal of 1232001531523 is 3251351002321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1232001531523 - 2¹⁷ = 1232001400451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232001531491 and 1232001531500.

It is not an unprimeable number, because it can be changed into a prime (1232001531529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11082538 + ... + 11193151.

It is an arithmetic number, because the mean of its divisors is an integer number (176022502380).

Almost surely, 2^{1232001531523} is an apocalyptic number.

1232001531523 is a deficient number, since it is larger than the sum of its proper divisors (176178487517).

1232001531523 is an equidigital number, since it uses as much as digits as its factorization.

1232001531523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22283597.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 1232001531523 its reverse (3251351002321), we get a palindrome (4483352533844).

The spelling of 1232001531523 in words is "one trillion, two hundred thirty-two billion, one million, five hundred thirty-one thousand, five hundred twenty-three".