1533243131011 has 4 divisors (see below), whose sum is σ = 1533388348800. Its totient is φ = 1533097913224.

The previous prime is 1533243130999. The next prime is 1533243131029. The reversal of 1533243131011 is 1101313423351.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1533243131011 - 2²⁷ = 1533108913283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1533243131111) 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 3 ways as a sum of consecutive naturals, for example, 72593056 + ... + 72614173.

It is an arithmetic number, because the mean of its divisors is an integer number (383347087200).

Almost surely, 2^{1533243131011} is an apocalyptic number.

1533243131011 is a deficient number, since it is larger than the sum of its proper divisors (145217789).

1533243131011 is a wasteful number, since it uses less digits than its factorization.

1533243131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145217788.

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 1533243131011 its reverse (1101313423351), we get a palindrome (2634556554362).

The spelling of 1533243131011 in words is "one trillion, five hundred thirty-three billion, two hundred forty-three million, one hundred thirty-one thousand, eleven".