12533535431 has 8 divisors (see below), whose sum is σ = 12736343424. Its totient is φ = 12331190520.

The previous prime is 12533535419. The next prime is 12533535461. The reversal of 12533535431 is 13453533521.

It is a happy number.

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 12533535431 - 2¹⁸ = 12533273287 is a prime.

It is a super-3 number, since 3×12533535431³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12533535391 and 12533535400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12533535401) 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, 60995 + ... + 169668.

It is an arithmetic number, because the mean of its divisors is an integer number (1592042928).

Almost surely, 2^12533535431 is an apocalyptic number.

12533535431 is a deficient number, since it is larger than the sum of its proper divisors (202807993).

12533535431 is an equidigital number, since it uses as much as digits as its factorization.

12533535431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231541.

The product of its digits is 81000, while the sum is 35.

The spelling of 12533535431 in words is "twelve billion, five hundred thirty-three million, five hundred thirty-five thousand, four hundred thirty-one".