13000033231 has 4 divisors (see below), whose sum is σ = 13178115952. Its totient is φ = 12821950512.

The previous prime is 13000033219. The next prime is 13000033237. The reversal of 13000033231 is 13233000031.

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 13000033231 - 2¹¹ = 13000031183 is a prime.

It is a super-2 number, since 2×13000033231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13000033237) 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, 89041251 + ... + 89041396.

It is an arithmetic number, because the mean of its divisors is an integer number (3294528988).

Almost surely, 2^13000033231 is an apocalyptic number.

13000033231 is a deficient number, since it is larger than the sum of its proper divisors (178082721).

13000033231 is an equidigital number, since it uses as much as digits as its factorization.

13000033231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178082720.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 13000033231 its reverse (13233000031), we get a palindrome (26233033262).

The spelling of 13000033231 in words is "thirteen billion, thirty-three thousand, two hundred thirty-one".